Synthesis and x‐ray crystal structure of two triorganostannylcobalt complexes

Abstract

T h e s y n t h e s i s a n d X -r a y c r y s t a l s t r u c t u r e a n a l y s i s o f t w o t r i o r g a n os t a n n y l c o h a l t c o m p l e x e s ( I ) a n d ( 1 1 ) c o n t a i n i n g a n a s y m m e t r i c t i n a n d a n a s y m m e t r i c c a r b o n a t o m , CH, CO I .. J

Chirality, static and dynamic stereochemistry of organotin compounds

“…Optically active (+)-and (--)-p-(i-propylmethylphenylstannyl) benzoic acids (56) and their methyl esters (57) were similarly prepared by Lequan four years later 38) (see Table 3). They are characterized by very tow optical rotations.…”

“…They are characterized by very tow optical rotations. Furthermore, the diastereomeric brucine salts via which the acids were resolved, are characterized by almost identical NMR spectra that cannot be used to follow their separation so that no precise information is available about the optical purity of (56) and (57).…”