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Complexes of the [Re(6)(mu(3)-Se)(8)](2+) core-containing clusters with the water-soluble 1,3,5-triaza-7-phosphaadamantane (PTA) ligand: unexpected ligand protonation and related studies.

作者信息

Tu Xiaoyan, Nichol Gary S, Wang Ruiyao, Zheng Zhiping

机构信息

Department of Chemistry, The University of Arizona, Tucson, Arizona 85721, USA.

出版信息

Dalton Trans. 2008 Nov 21(43):6030-8. doi: 10.1039/b806888g. Epub 2008 Sep 22.

DOI:10.1039/b806888g
PMID:19082060
Abstract

Three new complexes of the Re(6)(mu(3)-Se)(8) core-containing clusters with the water-soluble trialkylphosphine ligand 1,3,5-triaza-7-phosphaadamantane (PTA), Re(6)(micro(3)-Se)(8)(PEt(3))(5)(PTA)(2) (P5PTA, ), [Re(6)(micro(3)-Se)(8)(PEt(3))(5)(PTAH)]Re(6)(micro(3)-Se)(8)(PEt(3))(5)(PTA)(5) (), and Re(6)(micro(3)-Se)(8)(PEt(3))(5)(PTAH)(HBr)(SbF(6))(2)Br(4) () have been prepared and structurally characterized. Unexpected protonation of the cluster-bound PTA ligand was observed when coordination of with HgI(2) was attempted, affording compound featuring a protonated PTA ligand, PTAH. Deliberate acidification of with HBr produced compound , and the protonation was investigated by using (31)P NMR spectroscopy. Crystallographic studies revealed distinct structural distortions of the ligand as a result of protonation.

摘要

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