Synthesis and Crystal Structure of Trans-diaquabis (hexamethylenetetramine-N)bis(isothiocyanato)cobalt(Ⅱ) trans-tetraaquabis(isothiocyanato)cobalt(Ⅱ) dihydrate

摘要

The synthesis and crystal structure of [Co(NCS)2(hmt)2(H2- O)2]·[Co(NCS)2(H2O)4]·2H2O (hmt = hexamethylenetetramine) are reported. The crystal belongs to triclinic, space group Pī with unit cell parameters: a = 7.917(1), b = 9.023(1), c = 12.877(1) ?, α = 94.21(1), β = 96.68(1), γ = 115.42(1)°, C16H40Co2N12O8S4, Mr = 774.7, V = 817.33 (A。）3, Z = 1, Dc = 1.574 g/cm3, F(000) = 402 and μ(MoKα) = 1.328mm-1. The final values of R and wR are 0.0251 and 0.0598, respectively, for 2545 observed reflections with I > 2σ(I). Each Co atom is in an octahedral coordination environment, and the independent uncharged components [Co(NCS)2(hmt)2(H2O)2], [Co(NCS)2(H2O)4] and H2O are linked together by three kinds of hydrogen bonds (O(2)-H…N(3) and O(3)-H…N(2), O(1)-H…O(4) and O(3)-H…O(4), O(2)-H…S(2) and O(4)-H…S(1)) to form a three-dimensional supramolecular architecture.