Synthesis, luminescence studies and crystal structures of two europium(II) hydrotris(pyrazol-1-yl)borate complexes:: Eu(HBpz3)2•2DPSO and Eu(HBpz3)2•2BPMU

被引：11

作者：

Carvalho, A

Domingos, A

Isolani, PC

Marques, N

de Matos, AP

Vicentini, G

机构：

[1] ITN, Dept Quim, P-2686953 Sacavem, Portugal

[2] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo, Brazil

来源：

POLYHEDRON | 2000年 / 19卷 / 14期

关键词：

europium compounds; hydrotris(pyrazolyl)borate ligands; luminescence studies; X-ray crystal structures;

D O I：

10.1016/S0277-5387(00)00445-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Europium(II) hydrotris(pyrazol-1-yl)borate complexes, Eu(HBpz(3))(2)L-2 (L = diphenylsulfoxide (1) and bis(pentamethylene)urea (2)), have been synthesized. Characterization of 1 and 2 by infrared absorption spectroscopy points to coordination of the neutral ligands through the sulfoxide and carbonyl oxygens, respectively. This was corroborated by X-ray diffraction analysis. In both compounds the metal centre is eight-coordinate by way of the six nitrogens of the two tridentate pyrazolyl ligands and the oxygen atoms of the diphenylsulfoxide or bis(pentamethylene) urea ligands, in a square antiprismatic configuration. Both complexes are luminescent at 77 K and display emission bands with maxima at 610 and 632 nm for 1 and 2, respectively. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1707 / 1712

页数：6

共 24 条

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