A new bimetallic barium yttrium oxo alkoxide Ba2Y4(mu(6)-O)(mu(3)-OEt)(6)(mu(3)-OH)(2)(dpm)(6)center dot 2EtOH: Structural characterization and thermal behavior

被引：9

作者：

Miele, P ^{[1
]}

Foulon, G ^{[1
]}

Hovnanian, N ^{[1
]}

机构：

[1] ENSCM,UMR 5635 CNRS,LAB MAT & PROC MEMBRANAIRES,F-34296 MONTPELLIER 5,FRANCE

来源：

INORGANICA CHIMICA ACTA | 1997年 / 255卷 / 02期

关键词：

barium complexes; yttrium complexes; oxo complexes; alkoxide complexes; crystal structures;

D O I：

10.1016/S0020-1693(96)05376-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Ba2Y4(mu(6)-O)(mu(3)-OEt)(6)(mu(3)-OH)(2)(dpm)(6) . 2EtOH (2) (dpm = 2,2,6,6-tetramethylheptane-3,5-dionato) was prepared from alkoxides of the two metals in the presence of 2,2,6,6-tetramethylheptane-3,5-dione. This compound was characterized by elemental analysis, H-1 NMR spectroscopy, mass spectrometry and an X-ray crystal study. Complex 2 crystallizes in the monoclinic space group P2(1)/c with unit cell parameters a = 14.512(5), b = 22.202(6), c = 18.461(4) Angstrom, beta = 112.87(2)degrees, V = 5480.4 Angstrom(3), Z = 2 and R = 0.0773 for 1403 observed reflections. Its crystal structure consists of a Ba2Y4 octahedron encapsulating a mu(6)-O unit. Six faces of the octahedron are capped by mu(3)-OEt ligands whereas the two others are capped by mu(3)-OH ligands. Each metal atom is chelated by a terminal dpm ligand. Yttrium atoms are heptacoordinated while barium atoms are octacoordinated with one terminal EtOH ligand. Its thermal behavior was studied by TG analysis. The data were compared with the results already obtained for the structurally similar complex Ba2Y4(mu(6)-O)(mu(3)-OEt)(8)(dpm)(6) (1).

引用

页码：289 / 294

页数：6

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