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Ge–Cu-Complexes Ph(pyO)Ge(μ(2)-pyO)(2)CuCl and PhGe(μ(2)-pyO)(4)CuCl—Representatives of Cu(I)→Ge(IV) and Cu(II)→Ge(IV) Dative Bond Systems

Phenylgermaniumpyridine-2-olate PhGe(pyO)(3) (compound 1Ge) and CuCl react with the formation of the heteronuclear complex Ph(pyO)Ge(μ(2)-pyO)(2)CuCl (2Ge’) rather than forming the expected compound PhGe(μ(2)-pyO)(3)CuCl (2Ge). Single-point calculations (at the B2T-PLYP level) of the optimized molec...

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Autores principales: Wagler, Jörg, Gericke, Robert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385301/
https://www.ncbi.nlm.nih.gov/pubmed/37513314
http://dx.doi.org/10.3390/molecules28145442
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author Wagler, Jörg
Gericke, Robert
author_facet Wagler, Jörg
Gericke, Robert
author_sort Wagler, Jörg
collection PubMed
description Phenylgermaniumpyridine-2-olate PhGe(pyO)(3) (compound 1Ge) and CuCl react with the formation of the heteronuclear complex Ph(pyO)Ge(μ(2)-pyO)(2)CuCl (2Ge’) rather than forming the expected compound PhGe(μ(2)-pyO)(3)CuCl (2Ge). Single-point calculations (at the B2T-PLYP level) of the optimized molecular structures confirmed the relative stability of isomer 2Ge’ over 2Ge and, for the related silicon congeners, the relative stability of 2Si over 2Si’. Decomposition of a solution of 2Ge’ upon access to air provided access to some crystals of the copper(II) compound PhGe(μ(2)-pyO)(4)CuCl (3Ge). Compounds 2Ge’ and 3Ge were characterized by single-crystal X-ray diffraction analyses, and the Ge–Cu bonds in these compounds were analyzed with the aid of quantum chemical calculations, e.g., Natural Bond Orbital analyses (NBO), Non-Covalent Interactions descriptor (NCI), and topology of the electron density at bond critical point using Quantum Theory of Atoms-In-Molecules (QTAIM) in conjunction with the related silicon compounds PhSi(μ(2)-pyO)(3)CuCl (2Si), PhSi(μ(2)-pyO)(4)CuCl (3Si), as well as the potential isomers Ph(pyO)Si(μ(2)-pyO)(2)CuCl (2Si’) and PhGe(μ(2)-pyO)(3)CuCl (2Ge). Pronounced Cu→Ge (over Cu→Si) lone pair donation was found for the Cu(I) compounds, whereas in Cu(II) compounds 3Si and 3Ge, this σ-donation is less pronounced and only marginally enhanced in 3Ge over 3Si.
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spelling pubmed-103853012023-07-30 Ge–Cu-Complexes Ph(pyO)Ge(μ(2)-pyO)(2)CuCl and PhGe(μ(2)-pyO)(4)CuCl—Representatives of Cu(I)→Ge(IV) and Cu(II)→Ge(IV) Dative Bond Systems Wagler, Jörg Gericke, Robert Molecules Article Phenylgermaniumpyridine-2-olate PhGe(pyO)(3) (compound 1Ge) and CuCl react with the formation of the heteronuclear complex Ph(pyO)Ge(μ(2)-pyO)(2)CuCl (2Ge’) rather than forming the expected compound PhGe(μ(2)-pyO)(3)CuCl (2Ge). Single-point calculations (at the B2T-PLYP level) of the optimized molecular structures confirmed the relative stability of isomer 2Ge’ over 2Ge and, for the related silicon congeners, the relative stability of 2Si over 2Si’. Decomposition of a solution of 2Ge’ upon access to air provided access to some crystals of the copper(II) compound PhGe(μ(2)-pyO)(4)CuCl (3Ge). Compounds 2Ge’ and 3Ge were characterized by single-crystal X-ray diffraction analyses, and the Ge–Cu bonds in these compounds were analyzed with the aid of quantum chemical calculations, e.g., Natural Bond Orbital analyses (NBO), Non-Covalent Interactions descriptor (NCI), and topology of the electron density at bond critical point using Quantum Theory of Atoms-In-Molecules (QTAIM) in conjunction with the related silicon compounds PhSi(μ(2)-pyO)(3)CuCl (2Si), PhSi(μ(2)-pyO)(4)CuCl (3Si), as well as the potential isomers Ph(pyO)Si(μ(2)-pyO)(2)CuCl (2Si’) and PhGe(μ(2)-pyO)(3)CuCl (2Ge). Pronounced Cu→Ge (over Cu→Si) lone pair donation was found for the Cu(I) compounds, whereas in Cu(II) compounds 3Si and 3Ge, this σ-donation is less pronounced and only marginally enhanced in 3Ge over 3Si. MDPI 2023-07-16 /pmc/articles/PMC10385301/ /pubmed/37513314 http://dx.doi.org/10.3390/molecules28145442 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wagler, Jörg
Gericke, Robert
Ge–Cu-Complexes Ph(pyO)Ge(μ(2)-pyO)(2)CuCl and PhGe(μ(2)-pyO)(4)CuCl—Representatives of Cu(I)→Ge(IV) and Cu(II)→Ge(IV) Dative Bond Systems
title Ge–Cu-Complexes Ph(pyO)Ge(μ(2)-pyO)(2)CuCl and PhGe(μ(2)-pyO)(4)CuCl—Representatives of Cu(I)→Ge(IV) and Cu(II)→Ge(IV) Dative Bond Systems
title_full Ge–Cu-Complexes Ph(pyO)Ge(μ(2)-pyO)(2)CuCl and PhGe(μ(2)-pyO)(4)CuCl—Representatives of Cu(I)→Ge(IV) and Cu(II)→Ge(IV) Dative Bond Systems
title_fullStr Ge–Cu-Complexes Ph(pyO)Ge(μ(2)-pyO)(2)CuCl and PhGe(μ(2)-pyO)(4)CuCl—Representatives of Cu(I)→Ge(IV) and Cu(II)→Ge(IV) Dative Bond Systems
title_full_unstemmed Ge–Cu-Complexes Ph(pyO)Ge(μ(2)-pyO)(2)CuCl and PhGe(μ(2)-pyO)(4)CuCl—Representatives of Cu(I)→Ge(IV) and Cu(II)→Ge(IV) Dative Bond Systems
title_short Ge–Cu-Complexes Ph(pyO)Ge(μ(2)-pyO)(2)CuCl and PhGe(μ(2)-pyO)(4)CuCl—Representatives of Cu(I)→Ge(IV) and Cu(II)→Ge(IV) Dative Bond Systems
title_sort ge–cu-complexes ph(pyo)ge(μ(2)-pyo)(2)cucl and phge(μ(2)-pyo)(4)cucl—representatives of cu(i)→ge(iv) and cu(ii)→ge(iv) dative bond systems
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385301/
https://www.ncbi.nlm.nih.gov/pubmed/37513314
http://dx.doi.org/10.3390/molecules28145442
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