Ruthenium(II) complexes bearing carboxylato and 2-oxocarboxylato ligands

被引：31

作者：

Müller, R ^{[1
]}

Hübner, E ^{[1
]}

Burzlaff, N ^{[1
]}

机构：

[1] Univ Konstanz, Fachbereich Chem, D-78457 Constance, Germany

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2004年 / 10期

关键词：

scorpionate ligands; ruthenium; bioinorganic chemistry; tripodal ligands;

D O I：

10.1002/ejic.200300816

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The syntheses of ruthenium(n) acetato and benzoato complexes [Ru(bdmpza)(O2CCH3)(PPh3)] (6) and [Ru(bdmpza)(O2CPh)(PPh3)] (7) [bdmpza = bis(3,5-dimethylpyrazol-1-yl)acetate] are reported. The complexes 6 and 7 are synthesized in high yield from [Ru(bdmpza)Cl(PPh3)(2)] (1) and thallium acetate (2) or thallium benzoate (3). In a similar substitution reaction a benzoylformate complex [Ru(bdmpza)(O2CC(O)Ph)(PPh3)] (8) is obtained from 1 and thallium benzoylformate (4). Reaction of 6 or 7 with benzoylformic acid also yields 8. In analogous reactions several 2-oxocarboxylato ruthenium(II) complexes [Ru(bdmpza){O2CC(O)R}(PPh3)] (9: R = CH2CH2CO2H, 10: R = Me, 11: R = Et) can be obtained. The low-spin ruthenium(II) complexes 8 to 11 exhibit a purple or brownish-red colour caused by MLCT transitions and thus a HOMO-LUMO gap which is almost identical to that of high-spin 2-oxoglutarate dependent iron oxygenases. 6 crystallises as a water adduct, 6(.)H(2)O and 8 forms an acetonitrile adduct 12. Crystal structures of the water adduct 6(.)H(2)O and 8 were obtained. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.

引用

页码：2151 / 2159

页数：9

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