20991-88-2

Basic information

• Product Name: 1H-Germole, 1,1-dimethyl-2,3,4,5-tetraphenyl-
• CAS NO: 20991-88-2
• Molecular Formula: C30H26Ge
• Molecular Weight: 459.126
• Mol File: 20991-88-2.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: 1H-Germole, 1,1-dimethyl-2,3,4,5-tetraphenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1H-Germole, 1,1-dimethyl-2,3,4,5-tetraphenyl-(20991-88-2)
• EPA Substance Registry System: 1H-Germole, 1,1-dimethyl-2,3,4,5-tetraphenyl-(20991-88-2)

Safety Data

• Hazardous Substances Data: 20991-88-2(Hazardous Substances Data)

Upstream product

• 311786-73-9 2,2,3,3-tetracyano-7,7-dimethyl-1,4,5,6-tetraphenyl-7-germabicyclo[2.2.1]hept-5-ene 
• 76054-64-3 7,7-dimethyl-1,4,5,6-tetraphenyl-2,3-benzo-7-germanorbornadiene 
• 501-65-5 diphenyl acetylene 
• 74-88-4 methyl iodide 
• 195721-62-1 1,1,2,2-tetramethyl-1,2-digerma-3,4,5,6-tetraphenylcyclohexa-3,5-diene 
• 670-54-2 ethenetetracarbonitrile 
• 536-74-3 phenylacetylene 
• 21289-08-7 (E,E)-(1,2,3,4-tetramethyl-1,3-butadien-1,4-ylidene)-dilithium 
• 1529-48-2 dichlorodimethylgermanium 
• 53433-58-2 1,1-bis(cyclopentadienyl)zircona-2,3,4,5-tetraphenylcyclopentadiene 
• 63106-71-8 tricarbonyl-(1,1-dimethyl-2,3,4,5-tetraphenyl-1-germacyclopentadiene)iron 
• 7550-45-0 titanium tetrachloride 
• 1184-78-7 trimethylamine-N-oxide 

Downstream Products

• 76054-69-8 Ge(CH₃)2C₆(C₆H₅)4(CCH₃)4 
• 873876-33-6 1,7,8,9-tetraphenyl-10,10-dimethyl-4-oxa-10-germa-1α,2α,6α,7α-tricyclo[5.2.1.0.(2,6)]deca-8-ene-3,5-dione 
• 311786-73-9 2,2,3,3-tetracyano-7,7-dimethyl-1,4,5,6-tetraphenyl-7-germabicyclo[2.2.1]hept-5-ene 
• 76054-64-3 7,7-dimethyl-1,4,5,6-tetraphenyl-2,3-benzo-7-germanorbornadiene 
• 751-38-2 1,2,3,4-tetraphenylnaphthalene 
• 7641-40-9 1,1-dimethyl-2,3,4,5-tetraphenylsilole 

Relevant articles and documents

Inversion barriers of methylsilole and methylgermole monoanions

Density functional MO calculations for the methylsilole anion of [C 4H4SiMe]- and methylgermole anion of [C 4H4GeMe]- at the B3LYP (full)/6-311+G* level (GAUSSIAN 94) were carried out and c

Ring contraction of 1,2-digermacyclohexa-3,5-dienes initiated by electron transfer reactions with TCNE

The thermal reaction of 1,2-digermacyclohexa-3,5-dienes with tetracyanoethylene (TCNE) gave 1-germacyclopenta-2,4-diene as a germylene extrusion compound through a charge-transfer complex. The 1-germacyclopenta-2,4-diene was trapped with TCNE to give 5,5,6,6-tetracyano-7-germanor-bornene.

Tetraphenylzirkonacyclopentadien-Derivate als Synthone fuer Tetraphenylthiophenmonoxid und substituierte Germanole

Improved syntheses for the five-membered heterocycles 2,3,4,5-tetraphenylthiophene-1-monoxide (1), 1,1-dichloro-2,3,4,5-tetraphenylgermole (3) and 1,1-dimethyl-2,3,4,5-tetraphenylgermole (4) are reported.They make use of bis(η5-cyclopentadienyl)-2,3,4,5-tetraphenyl-1-zirconacyclopentadiene (2), easily prepared in a one-step reaction from Cp2ZrCl2, n-BuLi and diphenylethyne.Further reaction of 2 with SOCl2, GeCl4 or Me2GeCl2 yields the desired products and allows recovery of Cp2ZrCl2.Crystal structure analyses of 1 and 4 demonstrate folded five-membered rings with a diene system.Starting from 3 the following derivatives have been synthesized: Ph4C4Ge(CCR)2 (R = H, t-Bu, Ph), Ph4C4GeCl (10) and Ph4C4GeCl.Moreover spectral data (IR, 1H NMR, 13C NMR) of all compounds and the crystal structure of 10 are reported.