Crystal structure of bis(mu(2)-methoxy-kappa O:kappa O)hexamethylbis(mu(2)-triphenylacetato-kappa O:kappa O ')bis(mu(2)-triphenylacetato-kappa O-2,O ':kappa O)dialuminium-dilanthanum toluene tetrasolvate

被引：1
|
作者：
Vinogradov, Alexander A. [1 ]
Roitershtein, Dmitrii M. [1 ,2 ]
Minyaev, Mikhail E. [1 ]
Lyssenko, Konstantin A. [3 ]
Nifant'ev, Ilya E. [1 ,4 ]
机构：
[1] Russian Acad Sci, AV Topchiev Inst Petrochem Synth, 29 Leninsky Prospect, Moscow 119991, Russia
[2] Russian Acad Sci, ND Zelinsky Inst Organ Chem, 47 Leninsky Prospect, Moscow 119991, Russia
[3] Russian Acad Sci, AN Nesmeyanov Inst Organoelement Cpds, 28 Vavilova Str, Moscow 119991, Russia
[4] Moscow MV Lomonosov State Univ, Chem Dept, 1 Leninskie Gory Str,Bldg 3, Moscow 119991, Russia
来源：
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS | 2018年 / 74卷
基金：
俄罗斯科学基金会;
关键词：
lanthanum; aluminium; triphenyl-acetate; pi-complex; coordination compound; crystal structure;
D O I：
10.1107/S2056989018015876
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The title compound, [Al2La2(C20H15O2)(4)(CH3)(6)(CH3O)(2)]center dot 4CH(3)C(6)H(5) or [{La(Ph3CCOO)(2)(Me3AlOMe)}(2)]center dot 4CH(3)C(6)H(5), was formed in a reaction between lanthanum tris(tetramethylaluminate) and triphenylacetic acid (1:1) with unintended partial oxidation. The triphenylacetate ligand exhibits mu(2)-kappa O-1:kappa O-1' bridging and mu(2)-kappa O-2,O':kappa O-1 semi-bridging coordination modes, forming a dimeric La-2(mu-OCO)(4) core. The semi-bridging triphenylacetate group provides additional bonding with an La3+ cation via the pi-system of one of its phenyl rings. The trimethylmethoxyaluminate anion, which is coordinated to the La3+ cation by its O atom, displays a rather long La-C-Me bond. Two toluene molecules are each disordered over two orientations about centres of symmetry with site occupancy factors of 0.5. The title compound represents the first example of an Ln(III) complex containing both alkyl alkoxide aluminate and pi-bounded arene fragments.
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收藏
页码：1790 / +
页数：19
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