Syntheses and Structural Characterizations of the Three-dimensional Polymers [(R2Sn)3{Co(CN)6}2·X] (R = Vinyl, Propyl, Butyl; X = Solvent)
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posted on 1999-10-28, 00:00 authored by Tianyan Niu, Allan J. JacobsonThree coordination polymers with the general formula [(R2Sn)3{Co(CN)6}2·X], R = vinyl(1), butyl(2), and propyl
(3), were synthesized and structurally characterized. The three compounds are homologues with similar cell
dimensions. They all crystallize in space group P63/mcm [1, a = 13.034(1) Å, c = 13.678(1) Å; 2, a = 13.741(1)
Å, c = 13.363(1) Å; 3, a = 13.477(1) Å, c = 13.362(1) Å]. The structures are formed by linking R2Sn units with
distorted octahedral Co(CN)6 fragments. Each tin atom is coordinated by four Co(CN)6 units and adopts an
octahedral SnN4C2 arrangement. Channels along the c axis are occupied by disordered alkyl groups. The channels
have “bottlenecks” which in 1 prevent facile release of solvent molecules. No solvent molecules are found in 2
and 3, since the channel space is occupied by the alkyl groups.
