Crystal structures and magnetic properties of binuclear copper(II) complexes with alkoxo and benzoato or silanecarboxylato bridges

Takashi Kawata, Michinari Yamanaka, Shigeru Ohba, Yuzo Nishida, Megumi Nagamatsu, Tadashi Tokii, Michinobu Kato, Omar W. Steward

研究成果: Article査読

46 被引用数 (Scopus)

抄録

The crystal structures of the binuclear copper(II) complexes [Cu2(L-ac)(PhCOO)] (1), [Cu2(L-ac)(2-Me-PhCOO)· 1/2MeOH (2), [Cu2(L-ac)(2,6-Me2-PhCOO)] (3), [Cu2(L-ac)(2,6-Cl2-PhCOO)] · 0.7DMF (4), and [Cu2(L-ac)(Ph2MeSiCOO)] (5) were determined by X-ray diffraction. The ligand H3(L-ac) is a 1:2 Schiff base derived from 1,3-diaminopropan-2-ol and acetylacetone. These complexes are antiferromagnetic and their -2J values are (1) 183, (2) 188, (3) 133, (4) 207, and (5) 95 cm-1, respectively. A rough positive correlation between the Cu ⋯ Cu distance and the -2Jvalue was observed except for 5. The smaller -2Jvalue of the triorganosilanecar-boxylato complex, 5, than the benzoato complexes, 1-4, indicates a stronger orbital countercomplementary effect in 5. The geometrical parameters in the benzoato bridge have a minor effect on the magnitude of the antiferromagnetic interaction.

本文言語English
ページ(範囲)2739-2747
ページ数9
ジャーナルBulletin of the Chemical Society of Japan
65
10
DOI
出版ステータスPublished - 1992 10 1

ASJC Scopus subject areas

  • 化学 (全般)

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