Copper Imidazolin-imine Coordination Compounds as Precursors for a Cu/Al Complex

Ivan Antsiburov; Johannes Stephan; Richard J.J. Weininger; Christian Gemel; Roland A. Fischer

doi:10.1021/acs.inorgchem.4c02530

Copper Imidazolin-imine Coordination Compounds as Precursors for a Cu/Al Complex

Ivan Antsiburov
, Johannes Stephan
, Richard J.J. Weininger
, Christian Gemel
, Roland A. Fischer

Chair of Inorganic and Organometallic Chemistry

Technical University of Munich

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

6 Scopus citations

Abstract

The reactions of [(CF₃SO₃Cu)₂(C₆H₆)] with the sterically hindered imidazolin-2-imine ligands DippImTMS (1,3-Bis(2,6-diisopropylphenyl)-2-(trimethylsilylimino)imidazoline) or DippImH (1,3-bis(2,6-diisopropylphenyl) imidazolin-2-imine) lead to the formation of the linear copper(I) complexes [Cu(DippImTMS)(OTf)] (1) and [Cu(DippImH)₂][OTf] (2), respectively. The triflate counteranion in 2 can be easily exchanged to the weakly coordinating [BAr^F] giving [Cu(DippImH)₂][BAr^F] (3) (BAr^F = tetrakis[3,5-bis(trifluoromethyl)phenyl]borate). Substitution of the N-heterocyclic imine (NHI) ligand in 3 by AlCp* (Cp* = pentamethylcyclopentadienyl) gives the tetrahedral [Cu(AlCp*)₄][BAr^F] (5). The reaction between lithiated imidazolin-2-iminate DippImLi and CuCl results in the triangular cluster [Cu₃(DippIm)₂Cl] (4). All products have been fully characterized by ¹H- and ¹³C NMR, mass spectrometry, as well as SC-XRD.

Original language	English
Pages (from-to)	17331-17339
Number of pages	9
Journal	Inorganic Chemistry
Volume	63
Issue number	38
DOIs	https://doi.org/10.1021/acs.inorgchem.4c02530
State	Published - 23 Sep 2024

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@article{88ca6d5cf91a40a1947b369196671a60,

title = "Copper Imidazolin-imine Coordination Compounds as Precursors for a Cu/Al Complex",

abstract = "The reactions of [(CF3SO3Cu)2(C6H6)] with the sterically hindered imidazolin-2-imine ligands DippImTMS (1,3-Bis(2,6-diisopropylphenyl)-2-(trimethylsilylimino)imidazoline) or DippImH (1,3-bis(2,6-diisopropylphenyl) imidazolin-2-imine) lead to the formation of the linear copper(I) complexes [Cu(DippImTMS)(OTf)] (1) and [Cu(DippImH)2][OTf] (2), respectively. The triflate counteranion in 2 can be easily exchanged to the weakly coordinating [BArF] giving [Cu(DippImH)2][BArF] (3) (BArF = tetrakis[3,5-bis(trifluoromethyl)phenyl]borate). Substitution of the N-heterocyclic imine (NHI) ligand in 3 by AlCp* (Cp* = pentamethylcyclopentadienyl) gives the tetrahedral [Cu(AlCp*)4][BArF] (5). The reaction between lithiated imidazolin-2-iminate DippImLi and CuCl results in the triangular cluster [Cu3(DippIm)2Cl] (4). All products have been fully characterized by 1H- and 13C NMR, mass spectrometry, as well as SC-XRD.",

author = "Ivan Antsiburov and Johannes Stephan and Weininger, \{Richard J.J.\} and Christian Gemel and Fischer, \{Roland A.\}",

note = "Publisher Copyright: {\textcopyright} 2024 The Authors. Published by American Chemical Society.",

year = "2024",

month = sep,

day = "23",

doi = "10.1021/acs.inorgchem.4c02530",

language = "English",

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publisher = "American Chemical Society",

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T1 - Copper Imidazolin-imine Coordination Compounds as Precursors for a Cu/Al Complex

AU - Antsiburov, Ivan

AU - Stephan, Johannes

AU - Weininger, Richard J.J.

AU - Gemel, Christian

AU - Fischer, Roland A.

PY - 2024/9/23

Y1 - 2024/9/23

N2 - The reactions of [(CF3SO3Cu)2(C6H6)] with the sterically hindered imidazolin-2-imine ligands DippImTMS (1,3-Bis(2,6-diisopropylphenyl)-2-(trimethylsilylimino)imidazoline) or DippImH (1,3-bis(2,6-diisopropylphenyl) imidazolin-2-imine) lead to the formation of the linear copper(I) complexes [Cu(DippImTMS)(OTf)] (1) and [Cu(DippImH)2][OTf] (2), respectively. The triflate counteranion in 2 can be easily exchanged to the weakly coordinating [BArF] giving [Cu(DippImH)2][BArF] (3) (BArF = tetrakis[3,5-bis(trifluoromethyl)phenyl]borate). Substitution of the N-heterocyclic imine (NHI) ligand in 3 by AlCp* (Cp* = pentamethylcyclopentadienyl) gives the tetrahedral [Cu(AlCp*)4][BArF] (5). The reaction between lithiated imidazolin-2-iminate DippImLi and CuCl results in the triangular cluster [Cu3(DippIm)2Cl] (4). All products have been fully characterized by 1H- and 13C NMR, mass spectrometry, as well as SC-XRD.

AB - The reactions of [(CF3SO3Cu)2(C6H6)] with the sterically hindered imidazolin-2-imine ligands DippImTMS (1,3-Bis(2,6-diisopropylphenyl)-2-(trimethylsilylimino)imidazoline) or DippImH (1,3-bis(2,6-diisopropylphenyl) imidazolin-2-imine) lead to the formation of the linear copper(I) complexes [Cu(DippImTMS)(OTf)] (1) and [Cu(DippImH)2][OTf] (2), respectively. The triflate counteranion in 2 can be easily exchanged to the weakly coordinating [BArF] giving [Cu(DippImH)2][BArF] (3) (BArF = tetrakis[3,5-bis(trifluoromethyl)phenyl]borate). Substitution of the N-heterocyclic imine (NHI) ligand in 3 by AlCp* (Cp* = pentamethylcyclopentadienyl) gives the tetrahedral [Cu(AlCp*)4][BArF] (5). The reaction between lithiated imidazolin-2-iminate DippImLi and CuCl results in the triangular cluster [Cu3(DippIm)2Cl] (4). All products have been fully characterized by 1H- and 13C NMR, mass spectrometry, as well as SC-XRD.

UR - https://www.scopus.com/pages/publications/85203814654

U2 - 10.1021/acs.inorgchem.4c02530

DO - 10.1021/acs.inorgchem.4c02530

M3 - Article

AN - SCOPUS:85203814654

SN - 0020-1669

VL - 63

SP - 17331

EP - 17339

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 38

ER -

Copper Imidazolin-imine Coordination Compounds as Precursors for a Cu/Al Complex

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