Poly[bis(μ₂-1,3-phenylenediamine-κ²N:N′)di-μ-thiocyanato-κ²N:S;κ²S:N-cadmium]

Abstract

The structure of the title polymeric compound, [Cd(SCN)2(C6H8N2)2]n, exhibits a two-dimensional staircase-like structure parallel to (010) in which the CdII atom lies on a twofold rotation axis and has a distorted octa­hedral CdS2N4 geometry involving four μ-1,3-(SCN) group donors and two N-atom donors from 1,3-phenyl­enedi­amine ligands, which also have twofold symmetry. The major contributions to the cohesion and the stability of this two-dimensional polymeric structure are the covalent Cd—S,N bonds and one weak intra­layer N—H⋯S hydrogen bond.

Two cadmium coordination polymers with bridging acetate and phenylenediamine ligands that exhibit two-dimensional layered structures

“…Examples of benzene-1,4-diamine metal-complex structures ISSN 2056-9890 have also been reported (Batten et al, 2001;Faizi & Prisyazhnaya, 2015). Few examples of bridging benzene-1,2diamine-2 N:N 0 (Liang & Qu, 2008;Duff, 1968), 1,3-diamine-2 N:N 0 (Chemli et al, 2013), or benzene-1,4-diamine-2 N:N 0 (Liu et al, 2012) ligands have been reported. Compounds (I) and (II) are two new examples of coordination polymers in which benzenediamine ligands bridge two metal atoms.…”

“…Cadmium is commonly observed with a trigonal-prismatic or trigonal-antiprismatic coordination geometry, often with one or two capping ligands (Bygott et al, 2007;Cherni et al, 2012;Uçar et al, 2004;Banerjee et al, 2005;Keypour et al, 2000). Coordination polymers with bridging benzene-1,2-diamine ligands (Liang & Qu, 2008;Duff, 1968), bridging benzene-1,3diamine ligands (Chemli et al, 2013), and bridging benzene-1,4-diamine ligands (Liu et al, 2012) have been reported…”