SYNTHESIS, PROPERTIES AND STRUCTURE OF DELTA-VALEROLACTAM LANTHANIDE PERCHLORATE COMPLEXES

被引：11
|
作者：
CARVALHO, LRF
ZINNER, LB
VICENTINI, G
BOMBIERI, G
BENETOLLO, F
机构：
[1] UNIV MILANO,IST CHIM FARM,VIALE ABRUZZI 42,I-20131 MILAN,ITALY
[2] UNIV SAO PAULO,INST QUIM,BR-01498 SAO PAULO,BRAZIL
[3] CNR,IST CHIM & TECNOL RADIOELEMENTI,I-35020 PADUA,ITALY
来源：
INORGANICA CHIMICA ACTA | 1992年 / 191卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
D O I：
10.1016/S0020-1693(00)80326-6
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Complexes with formula [LnL8](ClO4)3 (Ln = La-Ho) and [LnL7](ClO4)3 (Ln = Er-Lu, Y; L = delta-valerolactam) were synthesized and characterized by conductance measurements, IR spectra, X-ray powder diffraction patterns, electronic absorption spectra of the neodymium and emission spectrum of the europium compounds. X-ray single crystal structural analysis of the neodymium compound showed that it forms monoclinic crystals, space group P2(1)/n with a = 25.491(4), b = 16.074(3), c = 13.051(3) angstrom and beta = 90.15(3)-degrees. Neodymium ions are coordinated in a square-antiprismatic arrangement to eight oxygen atoms of the delta-valerolactam ligands. The average Nd-O bond length is 2.45(1) angstrom. The non-coordinated ClO4- ions are partially disordered.
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页码：49 / 56
页数：8
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