Coordination chemistry of 3-mercapto-2-(mercaptomethyl)propanoic acid (dihydroasparagusic acid) with iron and nickel

被引：27

作者：

Volkers, Phillip I. ^{[1
]}

Rauchfuss, Thomas B. ^{[1
]}

Wilson, Scott R. ^{[1
]}

机构：

[1] Univ Illinois, Dept Chem, Urbana, IL 61801 USA

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2006年 / 23期

关键词：

iron; nickel; S ligands; bridging ligands; coordination modes;

D O I：

10.1002/ejic.200600636

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The first transition-metal complexes bearing the natural product dihydroasparagusic acid, (HSCH2)(2)CHCO2H, as a ligand are reported. Various coordination modes and nuclearities are demonstrated for the chelating ligand by a series of iron and nickel complexes. Fe-2[(SCH2)(2)CHCO2H](CO)(6) retains carbonyl substitution reactivity typical of Fe2(SR)2(CO)6 complexes, yet carboxy coordination to Fe-I was unobserved. Coupling of the carboxylic acid with amines yields the corresponding amides Fe-2[(SCH2)(2)CHC(O)NHR](CO)(6) (R = Et, gly-O-tBu). Fe-2[(SCH2)(2)CHCO2H](CO)(4)(PMe3)(2) catalyzes H-2 production, but no better than unfunctionalized alkyl dithiolate analogs. Reactions of the ligand with NiCl2(dppe) afforded mono-, di-, and trinuclear complexes. Noteworthy is Ni-3[(SCH2)(2)CHCO2](2)(dppe)(2), which features an octahedrally coordinated Nirl center linked to a pair of square-planar Ni-II centers. (c) Wiley-VCH Verlag GmbH & Co.

引用

页码：4793 / 4799

页数：7

共 23 条

[21]

YANAGAWA H, 1972, Tetrahedron Letters, V25, P2549

[22] H/D exchange reaction in dinuclear iron thiolates as activity assay models of Fe-H2ase [J].