22702-77-8

Basic information

• Product Name: Digermane, 1,2-dichloro-1,1,2,2-tetramethyl-
• CAS NO: 22702-77-8
• Molecular Formula: C4H12Cl2Ge2
• Molecular Weight: 276.225
• Mol File: 22702-77-8.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: Digermane, 1,2-dichloro-1,1,2,2-tetramethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Digermane, 1,2-dichloro-1,1,2,2-tetramethyl-(22702-77-8)
• EPA Substance Registry System: Digermane, 1,2-dichloro-1,1,2,2-tetramethyl-(22702-77-8)

Safety Data

• Hazardous Substances Data: 22702-77-8(Hazardous Substances Data)

Usage

General Description

Digermane, 1,2-dichloro-1,1,2,2-tetramethyl- is a chemical compound with the molecular formula C4H8Cl2Ge. It is a colorless, flammable liquid that is highly reactive and can easily ignite when exposed to air or moisture. Digermane, 1,2-dichloro-1,1,2,2-tetramethyl- is primarily used in the production of organometallic compounds and as a reagent in organic synthesis. However, it is also a dangerous chemical and should be handled with extreme caution, as it is a strong irritant to the eyes, skin, and respiratory system. In addition, exposure to digermane can have toxic effects on the nervous system, liver, and kidneys, and it is considered a potential carcinogen. Therefore, proper safety measures and protective equipment are essential when working with this compound.

Upstream product

• 127-18-4 1,1,2,2-tetrachloroethylene 
• 993-52-2 hexamethyldigermane 
• 56-23-5 tetrachloromethane 
• 91858-09-2 tetramethyldigermene 
• 7646-78-8 tin(IV) chloride 
• 10038-98-9 germaniumtetrachloride 
• 76054-64-3 7,7-dimethyl-1,4,5,6-tetraphenyl-2,3-benzo-7-germanorbornadiene 
• 1529-48-2 dichlorodimethylgermanium 
• 10026-04-7 tetrachlorosilane 
• 104236-61-5 anisyl-5 tetramethyl-2,2,3,3 thio-5 dithiaphosphadigermolanne-1,4,5,2,3 
• 75-78-5 dimethylsilicon dichloride 
• 84784-54-3 1,4-diphenyl-2,3-benzo-7,7,8,8-tetramethyl-7,8-digermabicyclo<2,2,2>octadiene 

Downstream Products

• 22702-76-7 phenyldimethylchlorogermane 
• 207686-69-9 metallylchlorodimethylgermane 
• 134695-23-1 (E)-1,2-bis(chlorodimethylgermyl)ethylene 
• 21364-16-9 p-bis(trimethylgermyl)benzene 
• 207686-68-8 (CH₃)2CCHCH₂Ge(CH₃)2Cl 
• 90030-12-9 benzoylbromodimethylgermane 
• 82546-74-5 benzoylchlorodimethylgermane 
• 22822-14-6 Dimethylgermaniumbromidchlorid 
• 1529-48-2 dichlorodimethylgermanium 
• 134695-25-3 C₆H₅Ge(CH₃)2I 
• 63746-65-6 1,2-bis(chlorodimethylgermyl)ethane 
• 135736-78-6 Cl(CH₃)2GeCH₂C(CH₃)CHCH₂Ge(CH₃)2Cl 
• 145865-62-9 1,4-di-tert-butyl-2,2,3,3-tetramethyl-5-thio-1,4-diaza-2,3-digermolane 
• 59409-81-3 1,1,2,2-tetramethyldigermane 

Relevant articles and documents

Molecular structures of the digermanes Me2XGeGeXMe2 (X = Me, Cl, and H): An ab initio study combined with experimental investigation by raman spectroscopy and gas electron diffraction

Ab initio calculations were carried out to investigate the potential-energy surface for internal rotation of the methylated digermanes hexamethyldigermane Me3GeGeMe3 (1), dichlorotetramethyldigermane Me 2ClGeGeClMe2 (2), and tetramethyldigermane Me 2HGeGeHMe2 (3). Different basis sets [6-31+G(d), SDD, aug-cc-pVTZ] were employed at the DFT and MP2 levels of theory to optimize structures and to calculate energies and vibrational frequencies. For 1, one minimum representing a staggered structure was located on the potential-energy surface. For 2 and 3, antiperiplanar conformations with C2 symmetry were found to be the global minima. Additionally, synclinal minima were located for 2 and 3 when certain basis sets were employed. Determination of structural parameters in the gas phase by gas electron diffraction confirmed the computed predictions for all three compounds. For 2 and 3, the ratios of antiperiplanar to synclinal conformer were detected to be 90:10 (328 K) and 72:28 (293 K), respectively, by gas electron diffraction. The experimentally determined GeGe bond lengths in 1, 2, and 3 in the gas phase are 241.4(1), 242.7(2) (averaged for antiperiplanar and synclinal), and 241.7(1) pm (equal for antiperiplanar and synclinal). Only averaged structures were observed, using Raman spectroscopy, for 2 and 3 because the wavenumber differences are small between conformers and there is only a small contribution from the second conformer in each case. For 2, the crystal structure was also determined by X-ray diffraction. An anticlinal structure (with Cl atoms eclipsing the C atoms) was found with a GeGe bond length of 242.1 pm.

Digermylplatinum(II) organometallic rings L2PtGe(Me2)EGeMe2 [E = N-, O, S, (η-C5H4)2Fe]

The synthesis, reactivity, and characterization of the digermylplatinum(II) linear complexes (ClMe2Ge)2Pt(PPh3)2 (1) and (ClMe2Ge)2Pt(diphos) (2) and cyclic complexes (diphos)PtGe-(Me2)EGeMe2 [E = S (3), -NPh (4), (η5-C5H4)Fe(η5-C 5H4) (5), O (6)] are reported. The chemistry of 2-6 is illustrated through their reactions with phenylacetylene and N-methyltriazolinedione. Complexes 3 and 6 give double germylation of these unsaturated systems, while 2, by reaction with triazolinedione, gives the monogermylated complex Me2-(Cl)GePt(Cl)diphos and the dimer of the germylated heterocycle Me2GeNC(O)N(Me)C(O)N.

Dithiaphosphagermetannes-1,3,2,4 et dithiaphosphadigermolannes-1,4,5,2,3

The synthesis of the new germylated and phosphorylated heterocycles 2-anisyl-4,4-dimethyl-2-thio-1,3,2,4-dithiaphosphagermetane, (1), and 5-anisyl-2,2,3,3-tetramethyl-5-thio-1,4,5,2,3-dithiaphosphadigermolane, (2), are described.The decomposition of 1 with formation of (Me2GeS)3 and (AnPS2)n is observed at room temperature.At 200 deg C 2 undergoes thermal fragmentation leading to (Me2GeS)3 and (AnPS)n.These results are explained by two mechanisms of decomposition involving formation of transient species and or , respectively.Exchange reactions between 2 and various metal (MIVB) chlorides are described.With Me2SiCl2 the reaction leads to silathione , probably via transient dithiaphosphasiletane.