Hexakis(2,4,6‐tri iso propylphenyl) cyclo tristannoxane – a Molecular Diorganotin Oxide with Kinetically Inert Sn–O Bonds

The single‐crystal X‐ray structure analysis of hexakis(2,4,6‐tri iso propylphenyl) cyclo tristannoxane, cyclo ‐[(2,4,6‐ i ‐Pr 3 ‐C 6 H 2 ) 2 SnO] 3 ( 1 ), is reported and reveals this compound to contain an almost planar six‐membered ring. Redistribution reactions of 1 with cyclo ‐( t ‐Bu 2 SnO) 3 and t ‐Bu 2 SiCl 2 , respectively, failed and indicate an unusual kinetic inertness of the Sn–O bonds in 1 as compared to related molecular diorganotin oxides containing less bulkier substituents. The redistribution reaction of cyclo ‐( t ‐Bu 2 SnO) 3 with cyclo ‐( t ‐Bu 2 SnS) 2 leads to an equilibrium involving the trimeric diorganotin oxysulphides cyclo ‐ t ‐Bu 2 Sn(OSn t ‐Bu 2 ) 2 S ( 2 a ) and cyclo ‐ t ‐Bu 2 Sn(SSn t ‐Bu 2 ) 2 O ( 2 b ).