Magnetostructural characterization of copper(II) hydroxide dimers and coordination polymers coordinated to apical isothiocyanate and cyanide-based counteranions

作者：Savard Didier; Storr Tim; Leznoff Daniel B^*

来源：Canadian Journal of Chemistry, 2014, 92(10): 1021-1030.

DOI：10.1139/cjc-2014-0186

• copper
• hydroxide
• coordination polymers
• solid-state chemistry
• isothiocyanate
• X-ray structure
• gold
• cyanide

Five Cu(II) hydroxo-bridged complexes of the type [Cu-2(mu-OH)(2)(L)(2)][A](x)center dot yH(2)O (where L = 1,10-phenanthroline, A = NCS-, x = 2, y = 2 (1); L = 2,2'-bipyridine, A = NCS-, x = 2, y = 1 (2); L = 2,2'-bipyridine, A = [Au(CN)(4)](-), x = 2, y = 0 (3) and 2 (4); L = N, N, N', N'-teteramethylethylenediamine, A = [Pt(SCN)(4)](2-), x = 1, y = 0 (5)) have been prepared and have been characterized by elemental analysis, IR and Raman spectroscopy, X-ray crystallography, and SQUID magnetometry. Complexes 1 and 2 consist of five-coordinate Cu(II) hydroxo-bridged dinuclear units bound to two NCS-anions in the apical positions, 3 and 4 are pseudopolymorphs of a Cu(II) hydroxo-bridged dimer core with [Au(CN)(4)](-) counteranions, and 5 is a coordination polymer of Cu(II) hydroxo-bridged dimers with trans-bridging [Pt(SCN)(4)](2-) anions coordinated in the apical position of the five-coordinate Cu(II) centres. The magnetic susceptibility versus temperature for each system was measured, fit to obtain J-coupling values (which range from -0.37 to 17.8 cm(-1)), and qualitatively compared to known magnetostructural correlation parameters.

• 出版日期2014-10