μ-Hydroxo-μ-phenolato dinuclear nickel(II) complexes in a mixed-spin state and their urea adduct as relevance to the urease active site

被引：10

作者：

Amase, R ^{[1
]}

Shiraishi, H ^{[1
]}

Miyasato, Y ^{[1
]}

Ohba, M ^{[1
]}

Okawa, H ^{[1
]}

机构：

[1] Kyushu Univ, Fac Sci, Dept Chem, Higashi Ku, Fukuoka 8128581, Japan

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2005年 / 78卷 / 10期

关键词：

D O I：

10.1246/bcsj.78.1814

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Dinucleating compartmental ligands (2,6-bis(N-[(2-dimethylamino)ethyl]iminomethyl]-4-methylphenol (HL1) and 2-{N-[(2-dimethylamino)ethyl]iminomethyl)-6-{N-methyl-N-[2-(dimethylamino)ethyl]aminomethyl)-4-methylphenol (HL2)) have afforded the following dinuclear nickel(II) complexes: [Ni-2(L-1)(OH)(py)(H2O)I(ClO4)(2)center dot H2O (1), [Ni-2(L-2)(OH)(MeOH)(H2O)](ClO4)(2)center dot CH3CN (2), and [Ni-2(L-2)(OH)(dmf)(2)](ClO4)(2) (3). X-ray crystallographic studies for 1 and 3 have clarified mu-hydroxo-mu-phenolato dinuclear structure in a mixed-spin state with one pseudo octahedral Ni(11) (S = 1) and one planar Ni(11) (S = 0). The urea adducts, [Ni-2(L-1)(OH)(urea)(H2O*ClO4)(2) center dot H2O (F) and [Ni-2(L-2)(OH)(urea)(H2O)](ClO4)(2) (T), were prepared by the reaction of I and 2 with urea, respectively, and were structurally characterized to be in the mixed-spin state. The relevance of 1' and 2' to urease is discussed.

引用

页码：1814 / 1820

页数：7

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