Versatility of cyclooctatetraenyl ligands in rare earth metal complexes of the [M2(COT)3(THF)2] (M = Y and La) type

被引：8

作者：

Greenough, Joshua ^{[1
]}

Zhou, Zheng ^{[1
]}

Wei, Zheng ^{[1
]}

Petrukhina, Marina A. ^{[1
]}

机构：

[1] SUNY Albany, Dept Chem, Albany, NY 12222 USA

来源：

DALTON TRANSACTIONS | 2019年 / 48卷 / 17期

基金：

美国国家科学基金会;

关键词：

SANDWICH COMPLEXES; CRYSTAL-STRUCTURES; CYCLOPENTADIENYL; LANTHANOIDS; LANTHANIDES; REACTIVITY; CHEMISTRY; BLOCKING; CE; LN;

D O I：

10.1039/c9dt00868c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two new organometallic cyclooctatetraenyl complexes of the type [M-2(COT)(3)(THF)(2)] (M = Y and La) have been prepared, using optimized synthetic procedures, and fully characterized by X-ray diffraction analysis, IR and H-1 NMR spectroscopies. The structures can be represented as formed by the double-decker [M(COT)(2)](-) anion with an asymmetrically bound cationic [M(COT)(THF)(2)](+) unit. The COT rings in the anionic sandwich are not equidistant from the metal with the M-COTcentroid distances measuring at 1.991(5) angstrom and 2.074(5) angstrom for [Y(COT)(2)](-) vs. 2.045(4) angstrom and 2.154(5) angstrom for [La(COT)(2)](-). The sandwich fragments are eta(2)-coordinated to the second metal center with the average M-C distances of 2.837(4) angstrom and 2.879(5) angstrom for yttrium and lanthanum complexes, respectively. The M-COTcentroid distances in the cationic unit are 1.962(4) angstrom for the former and 2.009(2) angstrom for the latter.

引用

页码：5614 / 5620

页数：7

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