A novel bis-β-diketonate ligand stabilizes a [Co(II)8] cage that encapsulates a (μ3-O) ... H ... (μ3-O) moiety

被引：5

作者：

Salinas-Uber, Jorge ^{[1
]}

Barrios, Leoni A. ^{[1
]}

Roubeau, Olivier ^{[2
,3
]}

Aromi, Guillem ^{[1
]}

机构：

[1] Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain

[2] CSIC, ICMA, E-50009 Zaragoza, Spain

[3] Univ Zaragoza, E-50009 Zaragoza, Spain

来源：

POLYHEDRON | 2013年 / 54卷

关键词：

Magnetism; Bis-beta-diketones; Coordination chemistry; Cobalt; CHELATE COMPLEXES; COPPER(II); TRINUCLEAR; METAL; DINUCLEAR; MAGNETISM; 2,6-DI(ACETOACETYL)PYRIDINE; (2)-METALLACRYPTANDS; COORDINATION; NUCLEARITY;

D O I：

10.1016/j.poly.2013.02.014

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The novel ligand 1,3-bis-(3-oxo-3-(2-hydroxyphenyl)-propionyl)-2-pyridine, H4L, is used here for the first time. In a reaction with Co(II) it produces the complex salt [Co8O(OH)(H2L)(6)]HO3 (1), containing an octametallic cluster cation. The topology of this cluster, which encapsulates a rare (mu(3)-O)...H...(mu(3)-O) at its interior, exhibits a remarkable similarity to the cofactor of nitrogenase FeMoco. It features intramolecular antiferromagnetic interactions, which can be simulated using a spin-only model, yielding an S = 0 spin ground state, lying very close to numerous excited states. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：8 / 12

页数：5

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