Structural characterization of [Ln(TFA)3(HMPA)3] (Ln=La, Nd, Er) complexes

被引：10
作者：
Bombieri, G
Benetollo, F
Del Pra, A
Oliveira, VD
Melo, DMA
Zinner, LB
Vicentini, G
机构：
[1] Univ Milan, Ist Chim Farmaceut, I-20131 Milan, Italy
[2] CNR, ICTIMA, I-35121 Padua, Italy
[3] Univ Fed Rio Grande Norte, Dept Quim, BR-59072970 Natal, RN, Brazil
[4] Univ Sao Paulo, Inst Quim, BR-05599970 Sao Paulo, Brazil
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 323卷
关键词：
lanthanides; trifluoroacetate; hexamethylphosphoramide; structures;
D O I：
10.1016/S0925-8388(01)01130-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The X-ray data on La, Nd, Er complexes ([Ln(TFA)(3)(HMPA)(3)]) show that they crystallize in different forms depending on the solvent content. Er is six and seven coordinated in the two complex cations coexisting in the crystal cell: [Er(TFA)(2)(HMPA)(4)](+) and [Er(TFA)(2)(HMPA)(2)(H2O)(3)](+). The trifluoroacetate anions are monodentate in both coordination polyhedra. in the [Nd(TFA)(2)(HMPA)(4)](+) cations, Nd is eight coordinated with bidentate trifluoroacetate ligands. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：181 / 184
页数：4
相关论文
共 15 条
[1]   THE AMMONIUM SALT ROUTE TO OLIGOMERIC LANTHANUM SALT COMPLEXES - SYNTHESIS AND X-RAY CRYSTAL-STRUCTURE OF LA(NCS)3.4HMPA [J].
BARR, D ;
BROOKER, AT ;
DOYLE, MJ ;
DRAKE, SR ;
RAITHBY, PR ;
SNAITH, R ;
WRIGHT, DS .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1990, 29 (03) :285-287
[2]   AN EMPIRICAL CORRECTION FOR ABSORPTION ANISOTROPY [J].
BLESSING, RH .
ACTA CRYSTALLOGRAPHICA SECTION A, 1995, 51 :33-38
[3]   SYNTHESIS AND CRYSTAL-STRUCTURE OF HEXA(MU-TRIFLUOROACETATO)TETRAKIS-(TETRAMETHYLENESULFOXIDE)DILANTHANUM(III) POLYMER AND TETRA(MU-TRIFLUOROACETATO)-BIS(TRIFLUOROACETATO)TETRAKIS(TETRAMETHYLENESULFOXIDE)DINEODYMIUM(III) [J].
CASTELLANO, EE ;
OLIVA, G ;
ZINNER, LB ;
VICENTINI, G .
INORGANICA CHIMICA ACTA-F-BLOCK ELEMENTS ARTICLES AND LETTERS, 1985, 110 (02) :77-81
[4]  
de Simone C. A., 1987, Lanthanide and Actinide Research, V2, P127
[5]  
DONOGHUE JT, 1969, INORG NUCL CHEM, V31, P467
[6]   LANTHANOID COMPLEXES WITH HEXAMETHYLPHOSPHORAMIDE (HMPA) LIGAND - PREPARATION AND CRYSTAL-STRUCTURE OF YTTERBIUM COMPLEXES OF HMPA, [YB(H2O)5(HMPA)2]CL3.H2O.HMPA AND YBCL3(HMPA)3 [J].
HOU, ZM ;
KOBAYASHI, K ;
YAMAZAKI, H .
CHEMISTRY LETTERS, 1991, (02) :265-268
[7]  
Johnson J. K., 1976, ORNL5138
[8]   Preparation and properties of complexes between rare earth trifluoroacetates and hexamethylphosphoramide (HMPA) [J].
Oliveira, VS ;
Melo, DMA ;
da Silva, ZR ;
Zinner, LB ;
Zinner, K .
JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 303 :157-161
[9]   Processing of X-ray diffraction data collected in oscillation mode [J].
Otwinowski, Z ;
Minor, W .
MACROMOLECULAR CRYSTALLOGRAPHY, PT A, 1997, 276 :307-326
[10]  
OZHAVAKHISHVILI ZO, 1981, SOOB AKAD NAUK GRUZ, V104, P637
12