Transition metal complexes with thiosemicarbazide-based ligands. Part 56. Square-pyramidal complexes of copper(II) with 2-acetylpyridine S-methylisothiosemicarbazone
Polyhedron(2009)
摘要
The subject of this work is the synthesis and single-crystal X-ray analysis of two sulfato and one thiocyanato copper(II) complex with 2-acetylpyridine S-methylisothiosemicarbazone (HL) of the formulae: [Cu(HL)SO4(H2O)]·H2O (1), [Cu2(HL)2(μ-SO4)2]·2H2O (2) and [Cu(HL)(NCS)(SCN)] (3), as well as the structure of the protonated ligand H2L+I−. In contrast to complex 2, which is an authentic dimer, formed on account of the exo-bidentate coordination of both sulfato ligands, the structure of complex 3, thanks to hydrogen bonding, may be thought of as being a pseudo-dimer. All three complexes have slightly deformed square-pyramidal structures with the tridentate NNN neutral ligand in the basal plane. For complex 3, different modes of bonding of the ambidentate NCS group were discussed.
更多查看译文
关键词
Copper(II) complexes,2-Acetylpyridine S-methylisothiosemicarbazone,Crystal structures
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络