catena-Poly[[bis­(pyridine-κN)nickel(II)]-di-μ-thio­cyanato-κ²N:S;κ²S:N]

In the title compound, [Ni(NCS)₂(C₅H₅N)₂]_n, the Ni²⁺ cation is coordinated by four thio­cyanate anions (μ-1,3) and two pyridine ligands within a slightly distorted octa­hedral configuration. The Ni—N bond lengths to the pyridine rings are 2.1189 (17) and 2.1241 (17) Å, whereas those to the thiocyanate anions are 2.0299 (18) and 2.0359 Å. The Ni—S bond lengths are 2.5357 (6) and 2.5568 (6) Å. The Ni²⁺ cations are linked by N:S-bridging thio­cyanate ligands into chains extending along [010]. The Ni...Ni distance within the chains is 5.5820 (5) Å. The asymmetric unit contains two Ni²⁺ cations of which one is located on a centre of inversion, whereas the second is located on a general position.

Crystal structure of bis­[4-(4-chloro­benz­yl)pyridine-κN]bis­(thio­cyanato-κN)zinc

In the crystal structure of the title compound, [Zn(NCS)₂(C₁₂H₁₀ClN)₂], the Zn²⁺ cation is N-coordinated by two terminally bonded thio­cyante anions and by two 4-(4-chloro­benz­yl)pyridine ligands within a slightly distorted tetra­hedron. The asymmetric unit consists of half of the discrete complex, the central Zn²⁺ cation of which is located on a twofold rotation axis. The discrete complexes are linked into layers via a weak inter­molecular hydrogen-bonding inter­action, with a H...Cl distance of 2.85 Å and a C—H...Cl angle of 151°. These layers extend parallel to the ab plane and are held together by dispersion forces only.