Attempts of synthesis of Hg(SCN)4-based coordination polymers in conjunction with [Cu(L–L)2]2+ building blocks

Five novel heterobimetallic compounds [Cu(bpzm)2Hg(SCN)4]n (1), [Cu(bdmpzm)2(μ-SCN)Hg(SCN)3] (2), [Cu(pybzim)2(μ-SCN)Hg(SCN)3]·H2O (3), [Cu(bipy)2(μ-SCN)Hg(SCN)3][Cu(bipy)2(μ-SCN)2Hg(SCN)2] (4) and [Cu(bipy)(NCS)]2[Hg(SCN)4] (5) have been synthesized and structurally characterized (bpzm-bis(pyrazol-1-yl)methane, bdmpzm-bis(3,5-dimethylpyrazol-1-yl)methane, pybzim-2-(2-pyridyl)benzimidazole, phen-1,10-phenantroline and bipy-2,2′-bipyridine). The compounds 2, 3, 4 and 5 are molecular complexes, whereas 1 is an alternating 1-D zigzag chain of [Cu(bpzm)2]2+ and Hg(SCN)4]2− moieties in which the metal atoms are bridged via thiocyanate ions. The polymer 1 has been studied by magnetic measurement.

Graphical abstractFive novel heterobimetallic compounds [Cu(bpzm)2Hg(SCN)4]n (1), [Cu(bdmpzm)2(μ-SCN)Hg(SCN)3] (2), [Cu(pybzim)2(μ-SCN)Hg(SCN)3]·H2O (3), [Cu(bipy)2(μ-SCN)Hg(SCN)3][Cu(bipy)2(μ-SCN)2Hg(SCN)2] (4) and [Cu(bipy)(NCS)]2[Hg(SCN)4] (5) have been synthesized and structurally characterized (bpzm-bis(pyrazol-1-yl)methane, bdmpzm-bis(3,5-dimethylpyrazol-1-yl)methane, py‘bzim-2-(2-pyridyl)benzimidazole, phen-1,10-phenantroline and bipy-2,2′-bipyridine). The compounds 2, 3, 4 and 5 are molecular complexes, whereas 1 is an alternating 1-D zigzag chain of [Cu(bpzm)2]2+ and Hg(SCN)4]2− moieties in which the metal atoms are bridged via thiocyanate ions. The polymer 1 has been studied by magnetic measurement.Figure optionsDownload full-size imageDownload as PowerPoint slide