Synthesis and structural characterization of rare earth metal disulfonamide complexes

被引:0
作者
Gorlitzer, HW [1 ]
Spiegler, M [1 ]
Anwander, R [1 ]
机构
[1] Tech Univ Munich, Inst Anorgan Chem, D-85747 Garching, Germany
关键词
rare earth metals; lanthanides; chelating sulfonamides; silylamide route; C-2; symmetry;
D O I
暂无
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The reaction of rare earth silylamides Ln[N(SiHMe2)(2)](3)(thf)(n) [n = 1 for Sc (1a); n = 2 for Y (1b), La (1c), Nd (1d)] with trans-1,2-bis(2,4,6-triisopropylbenzenesulfonamido)cyclohexane (H2L, rac-2) in toluene at ambient temperature proceeds via an extended silylamide route, affording highly soluble complexes Sc(L)[N(SiHMe2)(2)] (3) and Ln(L)[N(SiHMe2)(2)] (thf) (4a-c) in excellent yields. An X-ray crystallographic study performed on the solvent-free, dinuclear yttrium derivative 5 revealed an unusual mu(2),eta(4):eta(1)-coordination of the disulfonamide Ligand, involving bridging S=O groups. In solution, equilibria between dimeric and monomeric forms, dependent on the presence of a donor molecule, were observed by NMR techniques.
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页码:1009 / 1014
页数:6
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