Complexes of the [Re6(μ3-Se)8]2+ core-containing clusters with the water-soluble 1,3,5-triaza-7-phosphaadamantane (PTA) ligand: unexpected ligand protonation and related studies

被引：0
|
作者：
Tu, Xiaoyan [1 ]
Nichol, Gary S. [1 ]
Wang, Ruiyao [2 ]
Zheng, Zhiping [1 ]
机构：
[1] Univ Arizona, Dept Chem, Tucson, AZ 85721 USA
[2] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada
来源：
DALTON TRANSACTIONS | 2008年 / 43期
基金：
美国国家科学基金会;
关键词：
D O I：
暂无
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Three new complexes of the [Re-6(mu(3)-Se)(8)](2+) core-containing clusters with the water-soluble trialkylphosphine ligand 1,3,5-triaza-7-phosphaadamantane (PTA), [Re-6(mu(3)-Se)(8)(PEt3)(5)(PTA)](SbF6)(2) (P5PTA, 1), [Re-6(mu(3)-Se)(8)(PEt3)(5)(PTAH)][Re-6(mu(3)-Se)(8)(PEt3)(5)(PTA)](SbF6)(5) (2), and [Re-6(mu(3)-Se)(8)(PEt3)(5)(PTAH)](2)(HBr)(SbF6)(2)Br-4 (3) have been prepared and structurally characterized. Unexpected protonation of the cluster-bound PTA ligand was observed when coordination of 1 with HgI2 was attempted, affording compound 2 featuring a protonated PTA ligand, PTAH. Deliberate acidification of 1 with HBr produced compound 3, and the protonation was investigated by using P-31 NMR spectroscopy. Crystallographic studies revealed distinct structural distortions of the ligand as a result of protonation.
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收藏
页码：6030 / 6038
页数：9
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