The Organosilyl Derivatives of Phosphorus, Arsenic, Antimony and Bismuth

Dimeric l-chloro-2,3,3,4,5,5,6-heptamethylcyclo I-aluma-3,5-disila-2,4,6-triazane [403] (22% colourless crystals X-ray structure analysis NMR, IR and mass spectra). 

Like nitrogen, phosphorus, arsenic, antimony and bismuth usually bond to silicon in the III valence state. NMR and vibrational spectra indicate a pyramidal structure 

Organosilyl phosphines, arsines, antimonines and bismuthines are readily oxidised and hydrolysed. They are toxic, vile-smelling compounds which self-ignite, and which dissolve readily in either polar or non-polar solvents. All operations with these compounds must be carried out under inert gas. Their susceptibility to oxygen increases continuously from the phosphorus to the bismuth compounds. 

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The Organosilyl Derivates of Phosphorus, Arsenic, Antimony and Bismuth 83... 

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