Synthesis and NHC lability of d(0) lithium, yttrium, titanium, and zirconium amido bis(N-heterocyclic carbene) complexes

Ian S. Edworthy; Alexander J. Blake; Claire Wilson; Polly L. Arnold

doi:10.1021/om0701874

Synthesis and NHC lability of d(0) lithium, yttrium, titanium, and zirconium amido bis(N-heterocyclic carbene) complexes

Ian S. Edworthy, Alexander J. Blake, Claire Wilson, Polly L. Arnold

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

Abstract

The synthesis of lithium(I) complexes of the neutral and anionic salts of a tridentate aminobis(N-heterocyclic carbene) ligand, L, are reported (L = N{CH2CH2(1-C[NCHCHNMes])}(2)), along with the X-ray diffraction determined molecular structure of the imidazolium proligand [H2N{CH2CH2(1-HC[NCHCHNMes])}(2)][Br](3) (H4LBr3). The transamination reaction between the lithium chloride adduct of HL and Y[N{SiMe3}(2)](3) affords yttrium amidocarbene complexes, while the transamination reaction between the imidazolium proligand and Ti(NMe2)(4) or Zr(NMe2)(4) affords a titanium or zirconium amidocarbene complex, respectively. The molecular structure of one of the yttrium products, Y(L)(N{SiMe3}(2))Cl, is reported. The reactivity of a selection of the complexes with phosphine oxides is compared.

Original language	English
Pages (from-to)	3684-3689
Number of pages	6
Journal	Organometallics
Volume	26
Issue number	15
DOIs	https://doi.org/10.1021/om0701874
Publication status	Published - 16 Jul 2007

Keywords / Materials (for Non-textual outputs)

N-HETEROCYCLIC CARBENES
PINCER DICARBENE COMPLEXES
LIGANDS
ALKOXIDE
ALKYL
PALLADIUM(II)
CATALYSIS
METALS
MODES

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@article{8334e6bf5f6b4ea59b2d04d72b68ebbc,

title = "Synthesis and NHC lability of d(0) lithium, yttrium, titanium, and zirconium amido bis(N-heterocyclic carbene) complexes",

abstract = "The synthesis of lithium(I) complexes of the neutral and anionic salts of a tridentate aminobis(N-heterocyclic carbene) ligand, L, are reported (L = N{CH2CH2(1-C[NCHCHNMes])}(2)), along with the X-ray diffraction determined molecular structure of the imidazolium proligand [H2N{CH2CH2(1-HC[NCHCHNMes])}(2)][Br](3) (H4LBr3). The transamination reaction between the lithium chloride adduct of HL and Y[N{SiMe3}(2)](3) affords yttrium amidocarbene complexes, while the transamination reaction between the imidazolium proligand and Ti(NMe2)(4) or Zr(NMe2)(4) affords a titanium or zirconium amidocarbene complex, respectively. The molecular structure of one of the yttrium products, Y(L)(N{SiMe3}(2))Cl, is reported. The reactivity of a selection of the complexes with phosphine oxides is compared.",

keywords = "N-HETEROCYCLIC CARBENES, PINCER DICARBENE COMPLEXES, LIGANDS, ALKOXIDE, ALKYL, PALLADIUM(II), CATALYSIS, METALS, MODES",

author = "Edworthy, {Ian S.} and Blake, {Alexander J.} and Claire Wilson and Arnold, {Polly L.}",

year = "2007",

month = jul,

day = "16",

doi = "10.1021/om0701874",

language = "English",

volume = "26",

pages = "3684--3689",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society",

number = "15",

}

TY - JOUR

T1 - Synthesis and NHC lability of d(0) lithium, yttrium, titanium, and zirconium amido bis(N-heterocyclic carbene) complexes

AU - Edworthy, Ian S.

AU - Blake, Alexander J.

AU - Wilson, Claire

AU - Arnold, Polly L.

PY - 2007/7/16

Y1 - 2007/7/16

N2 - The synthesis of lithium(I) complexes of the neutral and anionic salts of a tridentate aminobis(N-heterocyclic carbene) ligand, L, are reported (L = N{CH2CH2(1-C[NCHCHNMes])}(2)), along with the X-ray diffraction determined molecular structure of the imidazolium proligand [H2N{CH2CH2(1-HC[NCHCHNMes])}(2)][Br](3) (H4LBr3). The transamination reaction between the lithium chloride adduct of HL and Y[N{SiMe3}(2)](3) affords yttrium amidocarbene complexes, while the transamination reaction between the imidazolium proligand and Ti(NMe2)(4) or Zr(NMe2)(4) affords a titanium or zirconium amidocarbene complex, respectively. The molecular structure of one of the yttrium products, Y(L)(N{SiMe3}(2))Cl, is reported. The reactivity of a selection of the complexes with phosphine oxides is compared.

AB - The synthesis of lithium(I) complexes of the neutral and anionic salts of a tridentate aminobis(N-heterocyclic carbene) ligand, L, are reported (L = N{CH2CH2(1-C[NCHCHNMes])}(2)), along with the X-ray diffraction determined molecular structure of the imidazolium proligand [H2N{CH2CH2(1-HC[NCHCHNMes])}(2)][Br](3) (H4LBr3). The transamination reaction between the lithium chloride adduct of HL and Y[N{SiMe3}(2)](3) affords yttrium amidocarbene complexes, while the transamination reaction between the imidazolium proligand and Ti(NMe2)(4) or Zr(NMe2)(4) affords a titanium or zirconium amidocarbene complex, respectively. The molecular structure of one of the yttrium products, Y(L)(N{SiMe3}(2))Cl, is reported. The reactivity of a selection of the complexes with phosphine oxides is compared.

KW - N-HETEROCYCLIC CARBENES

KW - PINCER DICARBENE COMPLEXES

KW - LIGANDS

KW - ALKOXIDE

KW - ALKYL

KW - PALLADIUM(II)

KW - CATALYSIS

KW - METALS

KW - MODES

U2 - 10.1021/om0701874

DO - 10.1021/om0701874

M3 - Article

SN - 0276-7333

VL - 26

SP - 3684

EP - 3689

JO - Organometallics

JF - Organometallics

IS - 15

ER -

Synthesis and NHC lability of d(0) lithium, yttrium, titanium, and zirconium amido bis(N-heterocyclic carbene) complexes

Abstract

Keywords / Materials (for Non-textual outputs)

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