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

Xiaoyan Tu; Gary S. Nichol; Ruiyao Wang; Zhiping Zheng

doi:10.1039/b806888g

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

Xiaoyan Tu, Gary S. Nichol, Ruiyao Wang, Zhiping Zheng^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Three new complexes of the [Re₆(μ₃-Se) ₈]²⁺ core-containing clusters with the water-soluble trialkylphosphine ligand 1,3,5-triaza-7-phosphaadamantane (PTA), [Re ₆(μ₃-Se)₈(PEt₃) ₅(PTA)](SbF₆)₂ (P5PTA, 1), [Re ₆(μ₃-Se)₈(PEt₃) ₅(PTAH)][Re₆(μ₃-Se)₈(PEt ₃)₅(PTA)](SbF₆)₅ (2), and [Re ₆(μ₃-Se)₈(PEt₃) ₅(PTAH)]₂(HBr)(SbF₆)₂Br₄ (3) have been prepared and structurally characterized. Unexpected protonation of the cluster-bound PTA ligand was observed when coordination of 1 with HgI ₂ 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 ³¹P NMR spectroscopy. Crystallographic studies revealed distinct structural distortions of the ligand as a result of protonation.

Original language	English
Pages (from-to)	6030-6038
Number of pages	9
Journal	Dalton Transactions
Issue number	43
DOIs	https://doi.org/10.1039/b806888g
Publication status	Published - 2008
Externally published	Yes

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title = "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",

abstract = "Three new complexes of the [Re6(μ3-Se) 8]2+ core-containing clusters with the water-soluble trialkylphosphine ligand 1,3,5-triaza-7-phosphaadamantane (PTA), [Re 6(μ3-Se)8(PEt3) 5(PTA)](SbF6)2 (P5PTA, 1), [Re 6(μ3-Se)8(PEt3) 5(PTAH)][Re6(μ3-Se)8(PEt 3)5(PTA)](SbF6)5 (2), and [Re 6(μ3-Se)8(PEt3) 5(PTAH)]2(HBr)(SbF6)2Br4 (3) have been prepared and structurally characterized. Unexpected protonation of the cluster-bound PTA ligand was observed when coordination of 1 with HgI 2 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 31P NMR spectroscopy. Crystallographic studies revealed distinct structural distortions of the ligand as a result of protonation.",

author = "Xiaoyan Tu and Nichol, {Gary S.} and Ruiyao Wang and Zhiping Zheng",

year = "2008",

doi = "10.1039/b806888g",

language = "English",

pages = "6030--6038",

journal = "Dalton Transactions",

issn = "1477-9226",

number = "43",

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TY - JOUR

T1 - Complexes of the [Re6(μ3-Se)8] 2+ core-containing clusters with the water-soluble 1,3,5-triaza-7-phosphaadamantane (PTA) ligand

T2 - Unexpected ligand protonation and related studies

AU - Tu, Xiaoyan

AU - Nichol, Gary S.

AU - Wang, Ruiyao

AU - Zheng, Zhiping

PY - 2008

Y1 - 2008

N2 - Three new complexes of the [Re6(μ3-Se) 8]2+ core-containing clusters with the water-soluble trialkylphosphine ligand 1,3,5-triaza-7-phosphaadamantane (PTA), [Re 6(μ3-Se)8(PEt3) 5(PTA)](SbF6)2 (P5PTA, 1), [Re 6(μ3-Se)8(PEt3) 5(PTAH)][Re6(μ3-Se)8(PEt 3)5(PTA)](SbF6)5 (2), and [Re 6(μ3-Se)8(PEt3) 5(PTAH)]2(HBr)(SbF6)2Br4 (3) have been prepared and structurally characterized. Unexpected protonation of the cluster-bound PTA ligand was observed when coordination of 1 with HgI 2 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 31P NMR spectroscopy. Crystallographic studies revealed distinct structural distortions of the ligand as a result of protonation.

AB - Three new complexes of the [Re6(μ3-Se) 8]2+ core-containing clusters with the water-soluble trialkylphosphine ligand 1,3,5-triaza-7-phosphaadamantane (PTA), [Re 6(μ3-Se)8(PEt3) 5(PTA)](SbF6)2 (P5PTA, 1), [Re 6(μ3-Se)8(PEt3) 5(PTAH)][Re6(μ3-Se)8(PEt 3)5(PTA)](SbF6)5 (2), and [Re 6(μ3-Se)8(PEt3) 5(PTAH)]2(HBr)(SbF6)2Br4 (3) have been prepared and structurally characterized. Unexpected protonation of the cluster-bound PTA ligand was observed when coordination of 1 with HgI 2 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 31P NMR spectroscopy. Crystallographic studies revealed distinct structural distortions of the ligand as a result of protonation.

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U2 - 10.1039/b806888g

DO - 10.1039/b806888g

M3 - Article

AN - SCOPUS:55149089057

SN - 1477-9226

SP - 6030

EP - 6038

JO - Dalton Transactions

JF - Dalton Transactions

IS - 43

ER -

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

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