144473-47-2

Upstream product

• 144473-41-6 {((CH₃)3C₆H₃)(CO)2CrSn(C₆H₅)3}^(1-)*K⁽¹⁺⁾ = K{((CH₃)3C₆H₃)(CO)2CrSn(C₆H₅)3} 
• 3724-43-4 Vilsmeier reagent 
• 59611-74-4 N-(chloromethylene)-piperidinium chloride 
• 52542-58-2 2-chloro-1-methylpyridin-1-ium tetrafluoroborate 
• 66633-01-0 3,3-dichloro-1,2-di(t-butyl)cyclopropene 
• 2570-00-5 3,3-dichloro-1,2-diphenylcyclopropene 
• 12129-67-8 (mesitylene)tricarbonylchromium 
• 892-20-6 triphenylstannane 
• 108-67-8 1,3,5-trimethyl-benzene 
• 639-58-7 triphenyltin chloride 
• 131104-17-1 (π-1,3,5-Me3C6H3)(CO)2-chromium-hydrido-triphenylstannyl complex 
• 201230-82-2 carbon monoxide 

Relevant academic research and scientific papers

Photochemical synthesis of new (η6-arene)Cr-hydrido stannyl and (η6-arene)Cr-bis-stannyl complexes. Ligand effects on the Sn-H interaction in the hydrido stannyl compounds

Hydrido stannyl compounds containing the η2-H-SnPh3 ligand and bis-stannyl compounds containing two SnPh3 ligands have been obtained from the photolysis of (η6-arene)Cr(CO)3 and HSnPh3. New complexes with different arenes (mesitylene, trifluorotoluene and 1,4-dimethoxybenzene) have been obtained and characterized by X-ray diffraction: (η6-C6H4(OCH3) 2)Cr(CO)2(HSnPh3) (3a), (η6-C6H4(OCH3) 2)Cr(CO)2(SnPh3)2 (3b). Structural data for 3a: monoclinic; space group P21/c (No. 14); a=17.445(3), b=9.820(3) and c=16.302(5) A; Z=4; V=2539.2(12) A3; 3b: monoclinic; space group P21/n (No. 14); a=13.904(3), b=20.567(5) and c=13.911(3) A; Z=4; V=3994(2) A3. 1H-NMR as well as X-ray provided evidence for the existence of three-center two-electron bonds in the hydrido stannyl complexes. The effects of different ligands on bonding and spectroscopic parameters were studied. Arene exchange reactions of the bis-stannyl complexes, as well as reactions of some of these compounds with P(C2H5)3 and CO, were also investigated.

Photochemical synthesis of (η6-arene)chromium hydrido stannyl and (η6-arene)chromium bis(stannyl) complexes

Photolysis of (η6-arene)Cr(CO)3 complexes and HSnPh3 in aromatic solvents at room temperature has led to two classes of complexes: hydrido stannyl compounds containing the η2-H-SnPh3 ligand and bis(stannyl) compounds containing two SnPh3 ligands. The ratio between the two complexes simultaneously produced depends on the choice of the arene. Complexes with different arenes (mesitylene, toluene, benzene, fluorobenzene, and difluorobenzene) have been obtained and characterized including X-ray structures for (η-6C6H3(CH3) 3)Cr(CO)2 (H)(SnPh3) (1a). (η6-C6H3)3)(η 6CH3)3)Cr(CO)2(SnPhs 3)2 (1b), (η-C6-H6H3F)Cr(CO)2(SnPh 3)2 (4b), and (η-C6C6H4 (CO)2(SnPh3)2 (5b). X-ray crystallography of the last three compounds has given the following results: 1b, monoclinic, space group P21/c (No. 14), a = 13.905(4) A?, b = 18.499(2) A?, c = 17.708(2) A?, Z = 4, V = 4285(1) A?3; 4b, orthorhombic, space group Pca21 (No. 29), a = 16.717(2) A?, b = 18.453(2) A?, c = 25.766(2) A?, Z = 8, V = 7948(2) A?3; 5b, monoclinic, space group P21/c (No. 14), a = 13.756(2) A?, b = 18.560(2) A?, c = 17.159(2) A?, Z = 4, V = 4372(2) A?3. The relatively high J(119Sn-Cr-H) and J(117Sn-Cr-H) values as well as the X-ray structural data provide evidence for the existence of three-center two-electron bonds in the hydrido stannyl complexes. The 1H NMR data of the complexes are compared with chromium-arene bond distances, and a sensible trend is observed and discussed.

Transition Metal Stannyl Complexes, 7. - Preparation of Carbene Complexes (?-Arene)(CO)2CrCR2 by the Reaction of the Anionic Stannyl Complexes - with R2CX2 or Y

Carbene complexes (?-arene)(CO)2Cr=CR2 are formed in substitution/elimination reactions from the anionic stannyl complexes K and organic dihalides R2CX2 containing activated C-X bonds or ionic halides Y.Bis(stannyl)complexes (?-arene)(CO)2Cr(SnPh3)2 (3) and hydrido(stannyl)complexes (?-arene)(CO)2Cr(H)SnPh3 are formed as byproducts due to the reaction of the eliminated Ph3SnCl with the anionic starting complexes or electron transfer reactions, respectively.The portion and ration of the byproducts is largely influenced by the steric properties of both the (?-arene)(CO)2Cr fragment and the organic halide.Pyridinylidene complexes 2 are only obtained from 2-chloro-N-methylpyridinium tetrafluoroborate with 1a-c, but not with 1d.With the sterically less demanding halides Cl (n=3,4)> or 3,3-dichloro-1,2-diphenylcyclopropene the carbene complexes (?-arene)(CO)2Cr=C(H)NR2 or are obtained with all employed ?-arene ligands. Key Words: Carbene Complexes / Stannyl complexes / Chromium complexes / Anionic complexes

Uebergangsmetall-Stannyl-Komplexe. V. Darstellung der anionischen Stannyl-Komplexe K und Reaktion mit Organozinnhalogeniden zu Bis

The anionic stannyl complexes K (?-arene = C6H6, 1,3,5-C6H3Me3, 1,2,4,5-C6H2Me4, C6Me6) were prepared by deprotonation of the corresponding hydrido stannyl complexes (?-arene)(CO)2Cr(H)SnPh3 with KH.Cyclovoltammetric investigations