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Tetraphenyltin
Tetraphenyltin is an organotin compound with the chemical formula , often abbreviated as , where Ph is phenyl. It is a white crystalline solid. Preparation Tetraphenyltin can be prepared in high yield by the reaction of chlorobenzene, tin(IV) chloride and sodium metal in dry toluene. : : Uses Tetraphenyltin is used as a catalyst in polymerization reactions. It is a Stabilizer (chemistry), stabilizer in chlorinated transformer oils. Safety Tetraphenyltin is potential endocrine disrupting compound. It is a neurotoxin. It is very toxic to aquatic life with long lasting effects. It is toxic if swallowed, in contact with skin or if inhaled. It is dangerous to eyes. It is flammable. The result of combustion is carbon monoxide, carbon dioxide and tin oxides (e.g. ). Vapors of combustion are heavier than air and may spread along floors. Tetraphenyltin vapor forms explosive mixtures with air on intense heating. Its vapor density is 14.7 times greater than air. It is an irritant. Referen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetraphenylmethane
Tetraphenylmethane is an organic compound consisting of a methane core with four phenyl substituents. It was first synthesized by Moses Gomberg in 1898. Synthesis Gomberg's classical organic synthesis shown below starts by reacting triphenylmethyl bromide 1 with phenylhydrazine 2 to the hydrazine 3. Organic oxidation, Oxidation with nitrous acid then produces the azo compound 4 from which on heating above the melting point, nitrogen gas evolves with formation of tetraphenylmethane 5.{{cite journal , title = On tetraphenylmethane , first= M. , last=Gomberg , journal = J. Am. Chem. Soc. , year = 1898 , volume = 20 , issue = 10 , pages = 773–780 , doi= 10.1021/ja02072a009, url= https://zenodo.org/record/1428930 : Gomberg was able to distinguish this compound from triphenylmethane (elemental analysis was not an option given the small differences in the hydrogen fractions of 6.29% and 6.60%) by nitration of 5 with nitric acid to 6. A strong base (chemistry), base would b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |