Vanadium (beta-(dimethylamino)ethyl)cyclopentadienyl complexes with diphenylacetylene ligands

Guohua Liu; Xiaoquan Lu; Marcella Gagliardo; Dirk J. Beetstra; Auke Meetsma; Bart Hessen; Gaifen Liu

doi:10.1021/om8000718

Vanadium (beta-(dimethylamino)ethyl)cyclopentadienyl complexes with diphenylacetylene ligands

Guohua Liu^*, Xiaoquan Lu, Marcella Gagliardo, Dirk J. Beetstra, Auke Meetsma, Bart Hessen, Gaifen Liu

^*Corresponding author for this work

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

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Abstract

Reduction of the V(III) (beta-(dimethylamino)ethyl)cyclopentadienyl dichloride complex [eta(5):eta(1-) C5H4(CH2)(2)NMe2]VCl2(PMe3) (1) with 1 equiv of Na/Hg yielded the V(II) dimer {[eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(mu-Cl)}(2) (2). This compound reacted with diphenylacetylene in THF to give the V(II) alkyne adduct [eta(5):eta(1)-C5H4(CH2)(2)NMe2]VCl(eta 2-PhC CPh) (3). Further reduction of 2 with Mg in the presence of diphenylacetylene resulted in oxidative coupling of two diphenylacetylene groups to yield the diamagnetic, formally V(V), bent metallacyclopentatriene complex [eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(C4Ph4) (4).

Original language	English
Pages (from-to)	2316-2320
Number of pages	5
Journal	Organometallics
Volume	27
Issue number	10
DOIs	https://doi.org/10.1021/om8000718
Publication status	Published - 26-May-2008

Keywords

POLYMERIZATION BEHAVIOR
PARAMAGNETIC-COMPLEXES
BOROHYDRIDE COMPOUNDS
CRYSTAL-STRUCTURE
ANCILLARY LIGAND
CARBON BONDS
REACTIVITY
ALKYNE
TRIMERIZATION
BIS(TRIMETHYLSILYL)ACETYLENE

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Cite this

@article{0f4396b4ab2d436faaa775dfbe57ff2f,

title = "Vanadium (beta-(dimethylamino)ethyl)cyclopentadienyl complexes with diphenylacetylene ligands",

abstract = "Reduction of the V(III) (beta-(dimethylamino)ethyl)cyclopentadienyl dichloride complex [eta(5):eta(1-) C5H4(CH2)(2)NMe2]VCl2(PMe3) (1) with 1 equiv of Na/Hg yielded the V(II) dimer {[eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(mu-Cl)}(2) (2). This compound reacted with diphenylacetylene in THF to give the V(II) alkyne adduct [eta(5):eta(1)-C5H4(CH2)(2)NMe2]VCl(eta 2-PhC CPh) (3). Further reduction of 2 with Mg in the presence of diphenylacetylene resulted in oxidative coupling of two diphenylacetylene groups to yield the diamagnetic, formally V(V), bent metallacyclopentatriene complex [eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(C4Ph4) (4).",

keywords = "POLYMERIZATION BEHAVIOR, PARAMAGNETIC-COMPLEXES, BOROHYDRIDE COMPOUNDS, CRYSTAL-STRUCTURE, ANCILLARY LIGAND, CARBON BONDS, REACTIVITY, ALKYNE, TRIMERIZATION, BIS(TRIMETHYLSILYL)ACETYLENE",

author = "Guohua Liu and Xiaoquan Lu and Marcella Gagliardo and Beetstra, {Dirk J.} and Auke Meetsma and Bart Hessen and Gaifen Liu",

year = "2008",

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doi = "10.1021/om8000718",

language = "English",

volume = "27",

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T1 - Vanadium (beta-(dimethylamino)ethyl)cyclopentadienyl complexes with diphenylacetylene ligands

AU - Liu, Guohua

AU - Lu, Xiaoquan

AU - Gagliardo, Marcella

AU - Beetstra, Dirk J.

AU - Meetsma, Auke

AU - Hessen, Bart

AU - Liu, Gaifen

PY - 2008/5/26

Y1 - 2008/5/26

N2 - Reduction of the V(III) (beta-(dimethylamino)ethyl)cyclopentadienyl dichloride complex [eta(5):eta(1-) C5H4(CH2)(2)NMe2]VCl2(PMe3) (1) with 1 equiv of Na/Hg yielded the V(II) dimer {[eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(mu-Cl)}(2) (2). This compound reacted with diphenylacetylene in THF to give the V(II) alkyne adduct [eta(5):eta(1)-C5H4(CH2)(2)NMe2]VCl(eta 2-PhC CPh) (3). Further reduction of 2 with Mg in the presence of diphenylacetylene resulted in oxidative coupling of two diphenylacetylene groups to yield the diamagnetic, formally V(V), bent metallacyclopentatriene complex [eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(C4Ph4) (4).

AB - Reduction of the V(III) (beta-(dimethylamino)ethyl)cyclopentadienyl dichloride complex [eta(5):eta(1-) C5H4(CH2)(2)NMe2]VCl2(PMe3) (1) with 1 equiv of Na/Hg yielded the V(II) dimer {[eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(mu-Cl)}(2) (2). This compound reacted with diphenylacetylene in THF to give the V(II) alkyne adduct [eta(5):eta(1)-C5H4(CH2)(2)NMe2]VCl(eta 2-PhC CPh) (3). Further reduction of 2 with Mg in the presence of diphenylacetylene resulted in oxidative coupling of two diphenylacetylene groups to yield the diamagnetic, formally V(V), bent metallacyclopentatriene complex [eta(5):eta(1)-C5H4(CH2)(2)NMe2]V(C4Ph4) (4).

KW - POLYMERIZATION BEHAVIOR

KW - PARAMAGNETIC-COMPLEXES

KW - BOROHYDRIDE COMPOUNDS

KW - CRYSTAL-STRUCTURE

KW - ANCILLARY LIGAND

KW - CARBON BONDS

KW - REACTIVITY

KW - ALKYNE

KW - TRIMERIZATION

KW - BIS(TRIMETHYLSILYL)ACETYLENE

U2 - 10.1021/om8000718

DO - 10.1021/om8000718

M3 - Article

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SP - 2316

EP - 2320

JO - Organometallics

JF - Organometallics

SN - 0276-7333

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