Self-assembly of a new 1D coordination polymer built of [Nb _6Cl_(12)(CN)_6]_4- and Mn(III) complexes

摘要

A new 1D coordination polymer [Me_4N]_3{[Mn(L)][Nb _6Cl_(12)(CN)2]}·3MeCN·H_2O (1) (L = acacen~(2-) = N,N'-bis(acetylacetone)-1,2-ethylenediimine) was synthesized from reaction between [Me_4N]_4[Nb _6Cl_(12)(CN)_6] and [Mn(L)]Cl in acetonitrile. The crystal structure of 1 was determined from single-crystal X-ray diffraction analysis. Compound 1 crystallizes in the tetragonal system, space group I4 _(1/a) (No. 88), a = 30.585(4), c = 27.348(6) ?, V = 25582(7) ?~3, Z = 16. Its 1D framework consists of chains formed of metal clusters and Mn(L) complexes linked to each other by Nb-C≡N-Mn-N≡C- Nb linkages. The chains extend along the a and b crystallographic axes and are related to each other by 4_1 screw axis. The chains are held together by [Me4N]~+ cations and solventmolecules located in channels running between the chains. 1 and the previously reported 1D coordination polymer [Me_4N]_3{[Mn(5-MeOsalen)][ Nb_6Cl _(12)(CN)_6]} (3) differ from each other in terms of their synthesis and their structural characteristics.