593-80-6

Basic information

• Product Name: dimethyl telluride
• Synonyms: Dimethyltelluride; Dimethyl telluride; Dimethyltellurium; Tellurobismethane; Methane, 1,1'-tellurobis-; Methane, tellurobis-; Methyl telluride (6CI,7CI,8CI); (methyltellanyl)methane
• CAS NO: 593-80-6
• Molecular Formula: C₂H₆Te
• Molecular Weight: 157.669
• EINECS: 209-809-5
• Mol File: 593-80-6.mol

Chemical Properties

• CAS DataBase Reference: dimethyl telluride(CAS DataBase Reference)
• NIST Chemistry Reference: dimethyl telluride(593-80-6)
• EPA Substance Registry System: dimethyl telluride(593-80-6)

Safety Data

• Hazardous Substances Data: 593-80-6(Hazardous Substances Data)

Usage

Uses

Given the provided materials, there are no specific applications listed for dimethyl telluride. However, based on its properties, potential uses could be hypothesized in various fields, such as:
Used in Chemical Research:
Dimethyl telluride could be utilized as a research compound for studying the properties and reactions of organotellurium compounds.
Used in Analytical Chemistry:
Due to its distinctive garlic-like odor, dimethyl telluride might serve as an indicator or marker in certain analytical processes where trace detection is required.
Used in Environmental Monitoring:
The pungent smell of dimethyl telluride, detectable at very low concentrations, could potentially be employed in environmental monitoring systems designed to detect the presence of hazardous substances or contamination.

Synthetic route

methyl iodide (74-88-4) → dimethyltellurium (593-80-6)

Conditions	Yield
With potassium hydroxide; tellurium; tin(ll) chloride In dimethyl sulfoxide at 70℃; for 2h;	97%
With potassium hydroxide; tellurium; hydrazine hydrate at 60 - 70℃;	85%

benzoic acid methyl ester (93-58-3) → dimethyltellurium (593-80-6) + benzoic acid (65-85-0)

Conditions	Yield
With tellurium; sodium tetrahydroborate; tert-butyl alcohol In N,N-dimethyl-formamide at 80 - 90℃; for 0.25h; also other alkyl carboxylates and tellurium reagents;	A n/a B 95%

trimethyltelluronium iodide (18987-26-3) → dimethyltellurium (593-80-6)

Conditions	Yield
With triphenylphosphine at 160℃; for 0.0833333h;	90%
at 100℃;
at 100℃;

bis(trifluoromethyl)tellurium (55642-42-7) + dimethyl zinc(II) (544-97-8) → dimethyltellurium (593-80-6) + Trifluoro-methyltellanyl-methane (57365-42-1) + C6H14O3*C2F6Zn

Conditions	Yield
With diethylene glycol dimethyl ether In acetonitrile for 24h;	A n/a B 78% C n/a

methyl iodide (74-88-4) → dimethylsulfide (75-18-3) + dimethyltellurium (593-80-6)

Conditions	Yield
With potassium disulfide; potassium ditelluride; hydrazine hydrate at 20 - 25℃;	A 42% B 74%

acetylene (74-86-2) + methyl iodide (74-88-4) → dimethyltellurium (593-80-6) + divinyltellane (63000-06-6) + methyl vinyl telluride (94718-60-2)

Conditions	Yield
With potassium hydroxide; tellurium; tin(ll) chloride In N,N,N,N,N,N-hexamethylphosphoric triamide; water at 105 - 115℃; under 6080 - 11400 Torr; for 5h; Product distribution; var. allyl halide, var.: without HMPA;	A 8% B 55% C 20%
With potassium hydroxide; tellurium; tin(ll) chloride In N,N,N,N,N,N-hexamethylphosphoric triamide; water at 105 - 115℃; under 6080 - 11400 Torr; for 5h;	A 8% B 55% C 20%
With potassium hydroxide; tellurium; tin(ll) chloride In N,N,N,N,N,N-hexamethylphosphoric triamide; water at 105 - 115℃; under 10640 Torr; for 5h;	A 8% B 55% C 20%

acetylene (74-86-2) → dimethyltellurium (593-80-6) + divinyltellane (63000-06-6) + methyl vinyl telluride (94718-60-2)

Conditions	Yield
With potassium hydroxide; tellurium; tin(ll) chloride; methyl iodide In N,N,N,N,N,N-hexamethylphosphoric triamide; water at 105 - 115℃; under 10640 Torr; for 5h;	A 8% B 55% C 20%
With potassium hydroxide; tellurium; tin(ll) chloride; methyl iodide In N,N,N,N,N,N-hexamethylphosphoric triamide; water at 105 - 115℃; under 6080 - 11400 Torr; for 5h; var. allyl halide, without HMPA;	A 8% B n/a C 20%

methyl iodide (74-88-4) → dimethyltellurium (593-80-6) + divinyltellane (63000-06-6) + methyl vinyl telluride (94718-60-2)

Conditions	Yield
With potassium hydroxide; tellurium; tin(ll) chloride; acetylene In N,N,N,N,N,N-hexamethylphosphoric triamide; water at 105 - 115℃; under 6080 - 11400 Torr; for 5h;	A 8% B 55% C 20%
With potassium hydroxide; tellurium; tin(ll) chloride; acetylene In N,N,N,N,N,N-hexamethylphosphoric triamide; water at 105 - 115℃; under 10640 Torr; for 5h;	A 8% B 55% C 20%

methyl iodide (74-88-4) → dimethyltellurium (593-80-6) + dimethyl ditelluride (20334-43-4)

Conditions	Yield
With potassium hydroxide; tellurium; hydrazine hydrate at 40 - 50℃;	A 48% B 37%
With sodium hydroxide; tellurium; cetyltrimethylammonim bromide; sodium glycolate Yield given. Multistep reaction;

dimethyl ditelluride (20334-43-4) + dichloromethane (75-09-2) → dimethyltellurium (593-80-6) + bis(methyltellanyl)methane (100207-53-2)

Conditions	Yield
Stage #1: dimethyl ditelluride With potassium hydroxide; hydrazine hydrate at 80 - 85℃; for 2h; Stage #2: dichloromethane at 40 - 42℃; for 1h;	A 5% B 43%

dimethyl ditelluride (20334-43-4) + 1,1-dichloroethane (75-34-3) → dimethyltellurium (593-80-6) + 1,1-bis(methyltellanyl)ethane (1221001-23-5) + methyl ethyl ditelluride (79971-49-6)

Conditions	Yield
Stage #1: dimethyl ditelluride With hydrazine hydrate; potassium hydroxide at 80 - 85℃; for 2.5h; Stage #2: 1,1-dichloroethane at 30 - 35℃; for 3h;	A 8% B 27% C 36%

Na2(Te,Po) + dimethyl sulfate (77-78-1) → dimethyltellurium (593-80-6) + dimethyl polonium

Conditions	Yield
In water with H2 satd. soln.; vac. distn. of the dark brown mass at 20 Hgmm in oil bath;	A n/a B 9.6%
In water with H2 satd. soln.; vac. distn. of the dark brown mass at 20 Hgmm in oil bath;	A n/a B 9.6%

methanol (67-56-1) → dimethyltellurium (593-80-6)

Conditions	Yield
With aluminum telluride at 320 - 335℃;

methyl radical (2229-07-4) → dimethyltellurium (593-80-6)

Conditions	Yield
With hydrogen telluride

dimethyl tellurium diiodide (18879-38-4) → dimethyltellurium (593-80-6)

Conditions	Yield
With water; sodium carbonate; sodium sulfite at 75℃;

choline (62-49-7) → dimethyltellurium (593-80-6)

Conditions	Yield
With sodium tellurite; sodium formate

betaine (107-43-7) → dimethyltellurium (593-80-6)

Conditions	Yield
With sodium tellurite; sodium formate

sodium formate (141-53-7) → dimethyltellurium (593-80-6)

Conditions	Yield
With potassium tellurite; choline chloride
With potassium tellurite; betaine

bis(trifluoromethyl)tellurium (55642-42-7) + dimethyl zinc(II) (544-97-8) → dimethyltellurium (593-80-6) + Trifluoro-methyltellanyl-methane (57365-42-1) + methyl(pentafluorophenyl)tellurium (115367-57-2) + C6H14O3*C2H3CdF3 + C6H14O3*C2H3F3Zn + C6H14O3*C2F6Zn

Conditions	Yield
With diethylene glycol dimethyl ether In trichlorofluoromethane at 0℃; for 24h; Mechanism; Product distribution; var. ratio of perfluoroorgano-tellur/dialkylmetal compound, solvent, temp., time;

bis(trifluoromethyl)tellurium (55642-42-7) + dimethylcadmium (506-82-1) → dimethyltellurium (593-80-6) + Trifluoro-methyltellanyl-methane (57365-42-1) + 1,1-Difluoro-1-methyltellanyl-ethane

Conditions	Yield
In trichlorofluoromethane at 0℃;

Trifluoro-methyltellanyl-methane (57365-42-1) + dimethyl zinc(II) (544-97-8) → dimethyltellurium (593-80-6) + C6H14O3*C2H3F3Zn

Conditions	Yield
With diethylene glycol dimethyl ether In trichlorofluoromethane for 24h; Yield given;

Trifluoro-methyltellanyl-methane (57365-42-1) + dimethylcadmium (506-82-1) → dimethyltellurium (593-80-6) + C6H14O3*C2H3CdF3

Conditions	Yield
With diethylene glycol dimethyl ether In trichlorofluoromethane for 24h; Yield given;

Trifluoro-methyltellanyl-methane (57365-42-1) + C6H14O3*C2H3CdF3 → dimethyltellurium (593-80-6) + bis(trifluoromethyl)cadmium, diglyme adduct

Conditions	Yield
With diethylene glycol dimethyl ether In trichlorofluoromethane at 0℃; for 24h; Yield given;

Trifluoro-methyltellanyl-methane (57365-42-1) + C6H14O3*C2H3F3Zn → dimethyltellurium (593-80-6) + C6H14O3*C2F6Zn

Conditions	Yield
With diethylene glycol dimethyl ether In trichlorofluoromethane at 0℃; for 24h; Yield given;

dimethyltelluronium allylide + benzaldehyde (100-52-7) → 2-phenyl-3-vinyloxirane (20248-57-1) + dimethyltellurium (593-80-6)

Conditions	Yield
In tetrahydrofuran Ambient temperature; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

diisobutyl telluronium allylide (89110-81-6) + benzaldehyde (100-52-7) → dimethyltellurium (593-80-6)

Conditions	Yield
In tetrahydrofuran Ambient temperature; moderate cis-selectivity;

dimethyl ditelluride (20334-43-4) + phenylacetylene (536-74-3) + methyl iodide (74-88-4) → dimethyltellurium (593-80-6) + 1-methyltelluro-2-phenylethyne (19859-25-7)

Conditions	Yield
With potassium hydroxide; dibenzo-18-crown-6 In benzene for 2h; Mechanism; Ambient temperature; other substrates;

methyl(pentafluorophenyl)tellurium (115367-57-2) + C6H14O3*C2H3CdF3 → dimethyltellurium (593-80-6) + C12CdF10*C6H14O3

Conditions	Yield
With diethylene glycol dimethyl ether In trichlorofluoromethane at 0℃; for 24h; Yield given;

methyl(pentafluorophenyl)tellurium (115367-57-2) + C6H14O3*C2H3F3Zn → dimethyltellurium (593-80-6) + C12F10Zn*C6H14O3

Conditions	Yield
With diethylene glycol dimethyl ether In trichlorofluoromethane at 0℃; for 24h; Yield given;

dimethyltellurium (593-80-6) + (η-cyclopentadienyl)2(μ-carbonyl)(μ-η2-CF3C2CF3)dirhodium → [(η(5)-C5H5)2Rh2(CO)(μ-η(1):η(1)-CF3C2CF3)(TeMe2)] (253685-98-2)

Conditions	Yield
In dichloromethane stirring (30 min); evapn., chromy. (CH2Cl2 / hexane = 1 : 1), extg. (CH2Cl2), evapn.; elem.anal.;	100%

1-(iodomethyl)silatrane (52741-69-2) + dimethyltellurium (593-80-6) → dimethyl(silatran-1-yl-methyl)telluronium iodide (120220-00-0)

Conditions	Yield
In acetonitrile for 1h; Ambient temperature;	95%

cyclopentadienyldicarbonyl(tetrahydrofuran)iron(II) tetrafluoroborate + dimethyltellurium (593-80-6) → {C5H5Fe(CO)2(Te(CH3)2)}(1+)*BF4(1-)={C5H5Fe(CO)2(Te(CH3)2)}BF4

Conditions	Yield
In dichloromethane to soln. of Fe complex in CH2Cl2 added ligand under Ar, stirred at roomtemp. for several h; filtered, concd. in vac., filtered in petroleum/Et2O, ppt. washed with Et2O and petroleum, dried in high vac., recrystd. (CH2Cl2/Et2O); elem. anal.;	95%

dimethyltellurium (593-80-6) + {(η5-C5H5)Fe(P(OMe)3)2(NCEt)}PF6 → {(η5-C5H5)Fe(P(OMe)3)2(TeMe2)}PF6

Conditions	Yield
In neat (no solvent) byproducts: EtCN; N2 atmosphere; refluxing (1 h); evapn. (vac.), dissoln. in CH2Cl2/ether (1:2), filtration, crystn. (-78°C, 1-4 d);	95%

dimethyltellurium (593-80-6) + {(η5-C5H5)Fe(P(OMe)3)2(NCMe)}PF6 → {(η5-C5H5)Fe(P(OMe)3)2(TeMe2)}PF6

Conditions	Yield
In neat (no solvent) byproducts: acetonitrile; N2 atmosphere; refluxing (1 h); evapn. (vac.), dissoln. in CH2Cl2/ether (1:2), filtration, crystn. (-78°C, 1-4 d); elem. anal.;	95%

dimethyltellurium (593-80-6) + {(η5-C5H5)Fe(P(OMe)3)2(NCPr)}PF6 → {(η5-C5H5)Fe(P(OMe)3)2(TeMe2)}PF6

Conditions	Yield
In neat (no solvent) byproducts: n-PrCN; N2 atmosphere; refluxing (1 h); evapn. (vac.), dissoln. in CH2Cl2/ether (1:2), filtration, crystn. (-78°C, 1-4 d);	95%

{C5H5NiC5H6}(1+)*{BF4}(1-) + dimethyltellurium (593-80-6) → (C5H5)Ni(Te(CH3)2)2(1+)*BF4(1-)=((C5H5)Ni(Te(CH3)2)2)BF4 (87105-55-3)

Conditions	Yield
In diethyl ether byproducts: cyclopentadiene; Ni-complex and Me2Te were stirred in ether under inert atmosphere for 2h at room temp.; ppt. was filtered, washed with ether, dried under high vac.; elem. anal.;	95%

ferrocenium hexafluorophosphate + cyclopentadienyl iron(II) dicarbonyl dimer (38117-54-3) + dimethyltellurium (593-80-6) → [C5H5Fe(CO)2(Te(CH3)2)](1+)*PF6(1-)=[C5H5Fe(CO)2(Te(CH3)2)]PF6 (106468-27-3)

Conditions	Yield
In dichloromethane byproducts: (C5H5)2Fe; addn. of ferricinium compd. to Fe complex soln. in the presence of TeMe2 under Ar; filtration; evapn. to 1/3 the volume; addn. of ether/pentane3/1); pptn.; thoroughly washing (ether, pentane); drying (high vac.);	94%

dimethyltellurium (593-80-6) + benzyl bromide (100-39-0) → benzyldimethyltelluronium bromide

Conditions	Yield
In methanol at 20℃; for 2h;	92%

cyclopentadienyl iron(II) dicarbonyl dimer (38117-54-3) + ferrocenium(III) tetrafluoroborate (1282-37-7) + dimethyltellurium (593-80-6) → {C5H5Fe(CO)2(Te(CH3)2)}(1+)*BF4(1-)={C5H5Fe(CO)2(Te(CH3)2)}BF4

Conditions	Yield
In dichloromethane byproducts: (C5H5)2Fe; addn. of ferricinium compd. to Fe complex soln. in the presence of TeMe2 under Ar; filtration; evapn. to 1/3 the volume; addn. of ether/pentane3/1); pptn.; thoroughly washing (ether, pentane); drying (high vac.);	92%

dimethyltellurium (593-80-6) + {(η5-C5H5)Fe(dppe)(NCEt)}PF6 → {(η5-C5H5)Fe(dppe)(TeMe2)}PF6

Conditions	Yield
In neat (no solvent) byproducts: EtCN; N2 atmosphere; refluxing (1 h); evapn. (vac.), dissoln. in CH2Cl2/ether (1:2), filtration, crystn. (-78°C, 1-4 d);	92%

dimethyltellurium (593-80-6) + {(η5-C5H5)Fe(dppe)(NCPr)}PF6 → {(η5-C5H5)Fe(dppe)(TeMe2)}PF6

Conditions	Yield
In neat (no solvent) byproducts: n-PrCN; N2 atmosphere; refluxing (1 h); evapn. (vac.), dissoln. in CH2Cl2/ether (1:2), filtration, crystn. (-78°C, 1-4 d);	92%

{(η5-C5H5)Fe(dppe)(NCMe)}PF6 + dimethyltellurium (593-80-6) → {(η5-C5H5)Fe(dppe)(TeMe2)}PF6

Conditions	Yield
In neat (no solvent) byproducts: acetonitrile; N2 atmosphere; refluxing (1 h); evapn. (vac.), dissoln. in CH2Cl2/ether (1:2), filtration, crystn. (-78°C, 1-4 d); elem. anal.;	92%

dicobalt octacarbonyl (15226-74-1, 61091-28-9, 61117-58-6) + ferrocenium(III) tetrafluoroborate (1282-37-7) + dimethyltellurium (593-80-6) → [Co(CO)3(Te(CH3)2)2](1+)*BF4(1-)=[Co(CO)3(Te(CH3)2)2]BF4 (106453-63-8)

Conditions	Yield
In dichloromethane byproducts: (C5H5)2Fe; addn. of ferricinium compd. to Co complex soln. in the presence of TeMe2 under Ar; filtration; evapn. to 1/3 the volume; addn. of ether/pentane(3/1); pptn.; thoroughly washing (ether, pentane); drying (high vac.); elem. anal.;	91%

dimethyltellurium (593-80-6) + η5-cyclopentadienyliodobis(dimethyl sulfide)cobalt(III) tetrafluoroborate → η5-cyclopentadienylbis(dimethyltelluride)iodocobalt(III) tetrafluoroborate

Conditions	Yield
In acetone byproducts: S(CH3)2; under Ar, soln. of (CpCo(SMe2)2I)BF4 (1 mmol) in acetone stirred with TeMe2 (2.2 mmol) for 5 min; solid pptd. by addn. of ether, filtered, recrystd. from CH2Cl2/ether, dried in vac.; elem. anal.;	90%

bromopentacarbonylmanganese(I) (14516-54-2) + dimethyltellurium (593-80-6) → MnBr(CO)4(Te(CH3)2) (96665-33-7)

Conditions	Yield
In hexane under N2 or Ar; the Te compd was added to a soln. of the Mn complex in hexane, heated at 50°C for 1 h; removal of solvent under reduced pressure, recrystd. from pentane;	89%

dimethyltellurium (593-80-6) + {(η5-C5H5)Fe(P(OPh)3)2(NCMe)}BF4 → {(η5-C5H5)Fe(P(OPh)3)2(TeMe2)}BF4

Conditions	Yield
In neat (no solvent) byproducts: acetonitrile; N2 atmosphere; refluxing (1 h); evapn. (vac.), dissoln. in CH2Cl2/ether (1:2), filtration, crystn. (-78°C, 1-4 d); elem. anal.;	87%

ferrocenium(III) tetrafluoroborate (1282-37-7) + tetracarbonyldicyclopentadienyldimolybdenum + dimethyltellurium (593-80-6) → {C5H5Mo(CO)2(TeMe2)2}BF4

Conditions	Yield
In dichloromethane byproducts: ferrocene; (Ar); stirring the mixt. 10 min at room temp.; filtration; washing (diethyl ether); vacuum drying; recrystn. (CH2Cl2/(C2H5)2O); elem. anal.;	86%

C5H5Co(S(CH3)2)2H(1+)*BF4(1-)={C5H5Co(S(CH3)2)2H}BF4 + dimethyltellurium (593-80-6) → C5H5Co(Te(CH3)2)2H(1+)*BF4(1-)={C5H5Co(Te(CH3)2)2H}BF4

Conditions	Yield
In diethyl ether byproducts: S(CH3)2; stirring soln. of educts, room temp., overnight; pptn.; under Ar; washing (ether); drying in vac.; recrystn. (CH2Cl2/ether); elem. anal.;	86%

(η5C5H5)Co(SMe2)3(BF4)2 + dimethyltellurium (593-80-6) → (η5-cyclopentadienyl)tris(dimethyltelluride)cobalt(III) tetrafluoroborate

Conditions	Yield
In acetone byproducts: S(CH3)2; under Ar, suspn. of (CpCo(SMe2)3)(BF4)2 (2 mmol) in acetone treated with TeMe2 (6.5 mmol), react. time 10-30 min; filtered, residue washed with CH2Cl2 and ether, dried in vac., recrystd. from MeNO2/CH2Cl2 (as required); elem. anal.;	86%

dimethyltellurium (593-80-6) + acrylic acid (79-10-7) → DMTeP*HCl (1246274-72-5)

Conditions	Yield
With hydrogenchloride In water at 80℃; for 2h;	86%

pentacarbonyl(methyl)manganese(I) + dimethyltellurium (593-80-6) → Mn(CO)4(CH3CO)(Te(CH3)2) (159125-25-4)

Conditions	Yield
In tetrahydrofuran under N2 or Ar; the Te compd. was added to a soln. of the Mn complex inTHF, stirred for 2 h at room temp.; solvent was removed under reduced pressure, chromy. on alumina (n-pentane), removal of solvent; elem. anal.;	85%

cobalt tricarbonyl nitrosyl + dimethyltellurium (593-80-6) → [Co(NO)(CO)2(Te(CH3)2)] (176704-09-9)

Conditions	Yield
In neat (no solvent) byproducts: CO; (N2); stirring (room temp., ca. 3 d); removal of volatiles (reduced pressure); elem. anal.;	81%

dimethyltellurium (593-80-6) + gallium(III) iodide (13450-91-4) → [GaI3(TeMe2)] (1095563-41-9)

Conditions	Yield
In dichloromethane (N2); addn. of dimethyltelluride to CH2Cl2 soln. of gallium compd.; evapn., elem. anal.;	80%

oxomolybdenum(V) chloride (13814-74-9) + dimethyltellurium (593-80-6) → C4H12Cl6Mo2O2Te2

Conditions	Yield
In toluene for 1h;	78%

Upstream product

• 18879-38-4 dimethyl tellurium diiodide 
• 141-53-7 sodium formate 
• 18987-26-3 trimethyltelluronium iodide 
• 74-86-2 acetylene 
• 74-88-4 methyl iodide 
• 20334-43-4 dimethyl ditelluride 
• 75-34-3 1,1-dichloroethane 
• 75-09-2 dichloromethane 
• 624-92-0 Dimethyldisulphide 
• 77-78-1 dimethyl sulfate 
• 10026-07-0 tellurium tetrachloride 
• 120567-67-1 (4-methoxy-phenyl)-dimethyl-telluronium; iodide 
• 67-48-1 choline chloride 
• 107-43-7 betaine 

Downstream Products

• 24383-90-2 dimethyl tellurium dichloride 
• 7446-07-3 paratellurite 
• 14683-12-6 tellurium 
• 18252-66-9 cis-PtCl2(dimethyl telluride)2 
• 18252-66-9 trans-dichlorobis(dimethyl telluride)platinum(II) 
• 159125-32-3 Mn(CO)4(CH₂C₆H₅)(Te(CH₃)2) 
• 159125-30-1 Mn(CO)4(COCH₂C₆H₅)(Te(CH₃)2) 
• 164990-78-7 [PPN][(CO)3Mn(.mu-TeMe)3Mn(CO)3] 
• 1147063-51-1 chloridotris(dimethyltellurium)palladium(II) tetrakis[3,5-bis(trifluoromethyl)phenyl]boranate 
• 7647-01-0 hydrogenchloride 
• 110096-23-6 (cyclopentadienyl)tris(dimethyltelluride)iron(II) tetrafluoroborate 
• 1165952-91-9 cyclohexa-1,3-diene 
• 92-52-4 biphenyl 
• 872-89-9 methylphenyltelluride 

Relevant articles and documents

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Reactions of 1,2-dihaloethanes with chalcogenide anions generated from elemental chalcogens and dimethylchalcogens were performed in the hydrazine hydrate-KOH system. The use of anions Se x 2- and Te x 2- (x = 1-4) resulted in ethylene evolution and chalcogen regeneration (or in increased x value in an anion). Oligomers of Thiokol type formed only in the reaction of the 1,2-dichloroethane with a mixture of potassium disulfide and diselenide. The reductive cleavage of oligomers obtained in the hydrazine hydrate-KOH system followed by methylation led to the formation of 1,2-bis(methylthio)ethane, 1-methylseleno-2- methylthioethane, and 1,2-bis(methylseleno)ethane. The features of substitution with chalcogenide anions in vicinal dihalides are discussed. Mass spectra of compounds obtained were measured and analyzed. Pleiades Publishing, Inc. 2006.

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Methods of preparing Group IVA and Group VIA organometallic compounds, particularly Group IVA organometallic compounds, are provided. Such manufacturing methods employ an amine and/or phosphine catalyst in a transalkylation step and may be performed in a batch, semi-continuous or continuous manner.

NEW ROUTE TO ORGANIC SELENIDES AND TELLURIDES

A new simple and convenient synthetic route to organic chalcogenides R2Y (R = alkyl, allyl, benzyl; Y = Se, Te) is developed, which involves generation of Se2- and Te2- anions from Se and Te in the system KOH-hydrazine hydrate, where the latter plays the role of both the medium and reducing agent.Subsequent alkylation of the anions with the corresponding alkyl halides furnishes the target chalcogenides in almost 95percent yield.Alkyl chlorides react faster than alkyl bromides and alkyl iodides.

Preparation of dialkyl tellurium and dialkyl selenium

Dialkyl SE and TE compounds are prepared by reacting a Na chalcogenide with a alkyl halide in a two-phase system of solvents.

SYNTHESIS OF ACETYLENIC TELLURIDES BY THE IODOMETHANE-INDUCED REACTION OF DIALKYL DITELLURIDES WITH PHENYLACETYLENE

Interaction of dialkyl ditellurides with phenylacetylene under phase transfer conditions occurs only in the presence of iodomethane giving rise to alkyl phenylethynyl tellurides in high yield.These compounds can also be obtained from alkyltellurenyl iodides and phenylacetylene under the same conditions.Keywords: Alkyl phenylethynyl tellurides, dialkyl ditellurides, iodomethane, phenylacetylene, alkyltellurenyl iodides.

Homolytic reactions of diorganotellurium and diorganoditellurium compounds in solution; an EPR study

The thermal and photochemical decompositions of dialkyltelluriums and dialkylditelluriums in t-butylbenzene solvent have been studied by EPR spectroscopy.On photolysis, di-t-butyl, diallyl, allyl methyl, and dibenzyl tellurium showed EPR spectra of t-butyl, allyl, allyl, and benzyl radicals respectively.Alkyl radicals were not detected directly on thermolysis in the range 300-370 K but, primary, secondary, and tertiary alkyl, benzyl and allyl telluriums gave spin adducts of the corresponding alkyl radical with nitrosodurene.Dimethyl tellurium was unreactive in the same temperature range.The rates of thermal decomposition of the diorgano telluriums at 315 K were found to be in the following order, as judged by the intensity of the spin adduct spectra: tBu2Te ca. tBuTeMe > (allyl)2Te ca. allylTeMe > sBu2Te > (benzyl)2Te > iPr2Te > Et2Te > Me2Te.For dihex-5-ethyltellurium the results were consistent with formation and cyclisation of hex-5-enyl and hex-5-enetelluryl radicals.In the case of dipent-4-enyltellurium, the results suggested that both exo- and endo-cyclisation of the pentene telluryl radicals were important.Di-isopropyl- and di-t-butyl-ditelluriums gave spin adducts of the corresponding alkyl radicals on therolysis in the same temperature range as the monoalkyltelluriums.

Method for preparation of dialkyl tellurium and dialkyl selenium

Tellurium and selenium dialkyls are prepared by reacting the corresponding tetrahalide with a Group I metal alkyl.