Abstract
The self-assembly of K(2)[Ni(CN)(4)] with (PhCH(2))(3)SnCl in a 1:2 molar ratio affords the title three-dimensional coordination polymer, poly[hexa-benzyl-tetra-μ-cyanato-nickel(II)ditin(IV)], [NiSn(2)(C(7)H(7))(6)(CN)(4)] (n) or {[(PhCH(2))(3)Sn](2)Ni(CN)(4)} (n) . The asymmetric unit is composed of four Ni(CN)(4) units and eight (PhCH(2))(3)Sn units. This neutral guest-free metal-organic framework (MOF) has a connectivity defined by the circuit symbol 4(2).8(4). The same circuit symbol was originally observed for PtS. The nickel(II) atom in each of the four Ni(CN)(4) units has a square-planar geometry, while the penta-coordinated Sn atoms have distorted trigonal-pyramidal geometries. The benzyl groups are involved in a number of C-H⋯π inter-actions, which help to consolidate the framework. There are also two pairs of ring-metal inter-actions present involving two nickel atoms.