The synthesis and crystal structure of the first metal-bound stannatrane complex Os(Sn[OCH2CH2]3N)(η2-S2CNMe2)(CO)(PPh3)2: structural comparisons with the analogous silatrane complex Os(Si[OCH2CH2]3N)(η2-S2CNMe2)(CO)(PPh3)2

Abstract

The first metal substituted stannatrane, Os(Sn- [OCH₂CH₂]₃N)(η²-S₂CNMe₂)(CO)(PPh₃)₂, has been synthesised by reaction between triethanolamine and the triiodostannyl osmium complex Os(SnI₃)(η²-S₂CNMe₂)(CO)(PPh₃)₂: the transannular Sn–N distance of 2.422(4) Å indicates a bonding interaction which is not seen in the corresponding silatranyl complex Os(Si[OCH₂CH₂]₃N)- (η²-S₂CNMe₂)(CO)(PPh₃)₂ which has an Si–N distance of 3.176(6) Å.