Cyclopentadienylnickel Chelates with Secondary or Tertiary Phosphane Tethers Bearing Imidazol-2-ylidene Ligands

Irina Werner; Stefanie Kohser; Holger Butenschön

doi:10.1002/ejic.202000326

Cyclopentadienylnickel Chelates with Secondary or Tertiary Phosphane Tethers Bearing Imidazol-2-ylidene Ligands

Irina Werner
, Stefanie Kohser
, Holger Butenschön^*

^*Corresponding author for this work

Institute of Organic Chemistry

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

Abstract

Treatment of cyclopentadienylnickel chloro or bromo chelates bearing either a tertiary 2-(di-tert-butyl)phosphanylethyl or a secondary 2-(2,4,6-trimethylphenyl)phosphanylethyl tether with imidazolylidene (Arduengo carbene) ligands results in cationic or electroneutral carbene complexes with either a decoordinated or a chelated tether. The outcome depends on the nature of the carbene, the counter anion, and the reactant stoichiometry. The results are the basis of ongoing investigations directed towards a deprotonation of the chelated cationic complexes with a secondary phosphorus atom.

Original language	English
Pages (from-to)	2545-2551
Number of pages	8
Journal	European Journal of Inorganic Chemistry
Volume	2020
Issue number	26
E-pub ahead of print	6 May 2020
DOIs	https://doi.org/10.1002/ejic.202000326
Publication status	Published - 8 Jul 2020

Keywords

Chelates
Cyclopentadienylalkylphosphane ligands
Imidazolylidene ligands
Nickel
Secondary phosphane ligands

ASJC Scopus subject areas

Inorganic Chemistry

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10.1002/ejic.202000326Licence: CC BY 4.0

Cite this

@article{f6709fa05cfd4bbcb662646e1debaa1f,

title = "Cyclopentadienylnickel Chelates with Secondary or Tertiary Phosphane Tethers Bearing Imidazol-2-ylidene Ligands",

abstract = "Treatment of cyclopentadienylnickel chloro or bromo chelates bearing either a tertiary 2-(di-tert-butyl)phosphanylethyl or a secondary 2-(2,4,6-trimethylphenyl)phosphanylethyl tether with imidazolylidene (Arduengo carbene) ligands results in cationic or electroneutral carbene complexes with either a decoordinated or a chelated tether. The outcome depends on the nature of the carbene, the counter anion, and the reactant stoichiometry. The results are the basis of ongoing investigations directed towards a deprotonation of the chelated cationic complexes with a secondary phosphorus atom.",

keywords = "Chelates, Cyclopentadienylalkylphosphane ligands, Imidazolylidene ligands, Nickel, Secondary phosphane ligands",

author = "Irina Werner and Stefanie Kohser and Holger Butensch{\"o}n",

note = "Funding Information: We thank Dr. Gerald Dr{\"a}ger, Institut f{\"u}r Organische Chemie, Leibniz Universit{\"a}t Hannover, for valuable help with the crystal structure analysis. We thank the Deutsche Forschungsgemeinschaft (DFG) for generous support of this project (DFG BU814 20‐1, 20‐2). Open access funding enabled and organized by Projekt DEAL.",

year = "2020",

month = jul,

day = "8",

doi = "10.1002/ejic.202000326",

language = "English",

volume = "2020",

pages = "2545--2551",

journal = "European Journal of Inorganic Chemistry",

issn = "1434-1948",

publisher = "American Chemical Society",

number = "26",

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TY - JOUR

T1 - Cyclopentadienylnickel Chelates with Secondary or Tertiary Phosphane Tethers Bearing Imidazol-2-ylidene Ligands

AU - Werner, Irina

AU - Kohser, Stefanie

AU - Butenschön, Holger

N1 - Funding Information: We thank Dr. Gerald Dräger, Institut für Organische Chemie, Leibniz Universität Hannover, for valuable help with the crystal structure analysis. We thank the Deutsche Forschungsgemeinschaft (DFG) for generous support of this project (DFG BU814 20‐1, 20‐2). Open access funding enabled and organized by Projekt DEAL.

PY - 2020/7/8

Y1 - 2020/7/8

N2 - Treatment of cyclopentadienylnickel chloro or bromo chelates bearing either a tertiary 2-(di-tert-butyl)phosphanylethyl or a secondary 2-(2,4,6-trimethylphenyl)phosphanylethyl tether with imidazolylidene (Arduengo carbene) ligands results in cationic or electroneutral carbene complexes with either a decoordinated or a chelated tether. The outcome depends on the nature of the carbene, the counter anion, and the reactant stoichiometry. The results are the basis of ongoing investigations directed towards a deprotonation of the chelated cationic complexes with a secondary phosphorus atom.

AB - Treatment of cyclopentadienylnickel chloro or bromo chelates bearing either a tertiary 2-(di-tert-butyl)phosphanylethyl or a secondary 2-(2,4,6-trimethylphenyl)phosphanylethyl tether with imidazolylidene (Arduengo carbene) ligands results in cationic or electroneutral carbene complexes with either a decoordinated or a chelated tether. The outcome depends on the nature of the carbene, the counter anion, and the reactant stoichiometry. The results are the basis of ongoing investigations directed towards a deprotonation of the chelated cationic complexes with a secondary phosphorus atom.

KW - Chelates

KW - Cyclopentadienylalkylphosphane ligands

KW - Imidazolylidene ligands

KW - Nickel

KW - Secondary phosphane ligands

UR - https://www.scopus.com/pages/publications/85085560533

U2 - 10.1002/ejic.202000326

DO - 10.1002/ejic.202000326

M3 - Article

AN - SCOPUS:85085560533

SN - 1434-1948

VL - 2020

SP - 2545

EP - 2551

JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

IS - 26

ER -

Cyclopentadienylnickel Chelates with Secondary or Tertiary Phosphane Tethers Bearing Imidazol-2-ylidene Ligands

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Ausgedehnte gekreuzt konjugierte pi-Systeme auf der Basis 1,1'-disubstituierter Ferrocen-Derivate (Initiation of International Collaboration)

Cyclopentadienylalkylphosphide Chelate Complexes

Cite this

Cyclopentadienylnickel Chelates with Secondary or Tertiary Phosphane Tethers Bearing Imidazol-2-ylidene Ligands

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Projects

Ausgedehnte gekreuzt konjugierte pi-Systeme auf der Basis 1,1'-disubstituierter Ferrocen-Derivate (Initiation of International Collaboration)

Cyclopentadienylalkylphosphide Chelate Complexes

Cite this