Synthesis and Crystal Structure of One－dimensional Chain Complexes [K （18－C－6） ]2[M （mnt）2] （M=Zn, Hg）

The reactions of 18-crown-6 with each of K2M (mnt)2] (M=Zn, Hg; mnt = 1,2-dicyanoethene-1,2-dithiolate, C2S2 (CN)2^2-) were studied and novel complexes K(18-C-6)]2Zn(mnt)2] (1) and K (18-C-6)]2 Hg(mnt)2] (2) were characterized by elemental analysis, IR spectrum and X-ray diffraction analysis. Complex 1 displays a one-dimensional chain of K(18-C-6)]2Zn(mnt)2] bridged by K-O interactions between adjacent K(18-C-6)]^ units. Complex 2 is also a one-dimensional chain of K(18-C-6)]2Hg(mnt)2] bridged by K…S weak interactions between adjacent K(18-C-6)]^ and Hg(mnt)2]^2-.