Routes to metallodendrimers of the [Re6(μ3-Se)8]2+ core-containing clusters

Bryan K. Roland; Chet Carter; Zhiping Zheng

doi:10.1021/ja026377h

Routes to metallodendrimers of the [Re₆(μ₃-Se)₈]²⁺ core-containing clusters

Bryan K. Roland, Chet Carter, Zhiping Zheng

Chemistry and Biochemistry

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

88 Scopus citations

Abstract

The reaction of [Re₆(μ₃-Se)₈(PEt₃)₅(MeCN)](SbF₆)₂ with an excess of 1,2-bis(4-pyridyl)ethane (L1) and (E)-1,2-bis(4-pyridyl)ethene (L2) produced [Re₆(μ₃-Se)₈(PEt₃)₅(L1)](SbF₆)₂ and [Re₆(μ₃-Se)₈(PEt₃)₅(L2)](SbF₆)₂, respectively, each bearing an accessible pyridyl N atom capable of further metal coordination. Reacting these cluster complex-based ligands with [Re₆(μ₃-Se)₈(MeCN)₆](SbF₆)₂ afforded two heptacluster metallodendrimers, each featuring a central [Re₆(μ₃-Se)₈]²⁺ cluster core surrounded by six units of [Re₆(μ₃-Se)₈(PEt₃)₅]²⁺ via the bridging interactions of its respective dipyridyl-based ligands. Their identity and stereochemistry have been established, with the most convincing evidence furnished by a unique ⁷⁷Se NMR spectroscopic study. Electrochemical studies suggest very interesting electronic properties of these novel metallodendrimers.

Original language	English (US)
Pages (from-to)	6234-6235
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	124
Issue number	22
DOIs	https://doi.org/10.1021/ja026377h
State	Published - Jun 5 2002

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

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title = "Routes to metallodendrimers of the [Re6(μ3-Se)8]2+ core-containing clusters",

abstract = "The reaction of [Re6(μ3-Se)8(PEt3)5(MeCN)](SbF6)2 with an excess of 1,2-bis(4-pyridyl)ethane (L1) and (E)-1,2-bis(4-pyridyl)ethene (L2) produced [Re6(μ3-Se)8(PEt3)5(L1)](SbF6)2 and [Re6(μ3-Se)8(PEt3)5(L2)](SbF6)2, respectively, each bearing an accessible pyridyl N atom capable of further metal coordination. Reacting these cluster complex-based ligands with [Re6(μ3-Se)8(MeCN)6](SbF6)2 afforded two heptacluster metallodendrimers, each featuring a central [Re6(μ3-Se)8]2+ cluster core surrounded by six units of [Re6(μ3-Se)8(PEt3)5]2+ via the bridging interactions of its respective dipyridyl-based ligands. Their identity and stereochemistry have been established, with the most convincing evidence furnished by a unique 77Se NMR spectroscopic study. Electrochemical studies suggest very interesting electronic properties of these novel metallodendrimers.",

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AB - The reaction of [Re6(μ3-Se)8(PEt3)5(MeCN)](SbF6)2 with an excess of 1,2-bis(4-pyridyl)ethane (L1) and (E)-1,2-bis(4-pyridyl)ethene (L2) produced [Re6(μ3-Se)8(PEt3)5(L1)](SbF6)2 and [Re6(μ3-Se)8(PEt3)5(L2)](SbF6)2, respectively, each bearing an accessible pyridyl N atom capable of further metal coordination. Reacting these cluster complex-based ligands with [Re6(μ3-Se)8(MeCN)6](SbF6)2 afforded two heptacluster metallodendrimers, each featuring a central [Re6(μ3-Se)8]2+ cluster core surrounded by six units of [Re6(μ3-Se)8(PEt3)5]2+ via the bridging interactions of its respective dipyridyl-based ligands. Their identity and stereochemistry have been established, with the most convincing evidence furnished by a unique 77Se NMR spectroscopic study. Electrochemical studies suggest very interesting electronic properties of these novel metallodendrimers.

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Routes to metallodendrimers of the [Re₆(μ₃-Se)₈]²⁺ core-containing clusters

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