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Formation and structure of the first metal complexes comprising amidinoguanidinate ligands
The first metal complexes comprising amidinoguanidinate ligands have been prepared and structurally characterized, namely bis[μ-N,N′,N′′,N′′′-tetraisopropyl-1-(1-butylamidinato)guanidinato-κ(3) N (1),N (2):N (2)]bis[(tetrahydrofuran)lithium], [Li(2)(C(18)H(37)N(4))(2)(C(4)H(8)O)(2)], (2), and...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5095825/ https://www.ncbi.nlm.nih.gov/pubmed/27840700 http://dx.doi.org/10.1107/S2056989016015322 |
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author | Sroor, Farid M. Liebing, Phil Hrib, Cristian G. Gräsing, Daniel Hilfert, Liane Edelmann, Frank T. |
author_facet | Sroor, Farid M. Liebing, Phil Hrib, Cristian G. Gräsing, Daniel Hilfert, Liane Edelmann, Frank T. |
author_sort | Sroor, Farid M. |
collection | PubMed |
description | The first metal complexes comprising amidinoguanidinate ligands have been prepared and structurally characterized, namely bis[μ-N,N′,N′′,N′′′-tetraisopropyl-1-(1-butylamidinato)guanidinato-κ(3) N (1),N (2):N (2)]bis[(tetrahydrofuran)lithium], [Li(2)(C(18)H(37)N(4))(2)(C(4)H(8)O)(2)], (2), and [bis(tetrahydrofuran)lithium]-di-μ-chlorido-{(N,N′-dicyclohexyl-1-butylamidinato-κ(2) N (1),N (2))[N,N′,N′′,N′′′-tetracyclohexyl-1-(1-butylamidinato)guanidinato-κ(2) N (1),N (2)]holmate(III)}, [HoLiCl(2)(C(4)H(8)O)(2)(C(17)H(31)N(2))(C(30)H(53)N(4))], (3). The novel lithium amidinoguanidinate precursors Li[(n)BuC(=NR)(NR)C(NR)(2)] [1: R = Cy (cyclohexyl), 2: R = (i)Pr) were obtained by treatment of N,N′-diorganocarbodiimides, R—N=C=N—R (R = (i)Pr, Cy), with 0.5 equivalents of n-butyllithium under well-defined reaction conditions. An X-ray diffraction study of 2 revealed a ladder-type dimeric structure in the solid state. Reaction of anhydrous holmium(III) chloride with in situ-prepared 2 afforded the unexpected holmium ‘ate’ complex [(n)BuC(=NCy)(NCy)C(NCy)(2)]Ho[(n)BuC(NCy)(2)](μ-Cl)(2)Li(THF)(2) (3) in 71% yield. An X-ray crystal structure determination of 3 showed that this complex contains both an amidinate ligand and the new amidinoguanidinate ligand. |
format | Online Article Text |
id | pubmed-5095825 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-50958252016-11-11 Formation and structure of the first metal complexes comprising amidinoguanidinate ligands Sroor, Farid M. Liebing, Phil Hrib, Cristian G. Gräsing, Daniel Hilfert, Liane Edelmann, Frank T. Acta Crystallogr E Crystallogr Commun Research Communications The first metal complexes comprising amidinoguanidinate ligands have been prepared and structurally characterized, namely bis[μ-N,N′,N′′,N′′′-tetraisopropyl-1-(1-butylamidinato)guanidinato-κ(3) N (1),N (2):N (2)]bis[(tetrahydrofuran)lithium], [Li(2)(C(18)H(37)N(4))(2)(C(4)H(8)O)(2)], (2), and [bis(tetrahydrofuran)lithium]-di-μ-chlorido-{(N,N′-dicyclohexyl-1-butylamidinato-κ(2) N (1),N (2))[N,N′,N′′,N′′′-tetracyclohexyl-1-(1-butylamidinato)guanidinato-κ(2) N (1),N (2)]holmate(III)}, [HoLiCl(2)(C(4)H(8)O)(2)(C(17)H(31)N(2))(C(30)H(53)N(4))], (3). The novel lithium amidinoguanidinate precursors Li[(n)BuC(=NR)(NR)C(NR)(2)] [1: R = Cy (cyclohexyl), 2: R = (i)Pr) were obtained by treatment of N,N′-diorganocarbodiimides, R—N=C=N—R (R = (i)Pr, Cy), with 0.5 equivalents of n-butyllithium under well-defined reaction conditions. An X-ray diffraction study of 2 revealed a ladder-type dimeric structure in the solid state. Reaction of anhydrous holmium(III) chloride with in situ-prepared 2 afforded the unexpected holmium ‘ate’ complex [(n)BuC(=NCy)(NCy)C(NCy)(2)]Ho[(n)BuC(NCy)(2)](μ-Cl)(2)Li(THF)(2) (3) in 71% yield. An X-ray crystal structure determination of 3 showed that this complex contains both an amidinate ligand and the new amidinoguanidinate ligand. International Union of Crystallography 2016-10-04 /pmc/articles/PMC5095825/ /pubmed/27840700 http://dx.doi.org/10.1107/S2056989016015322 Text en © Sroor et al. 2016 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/2.0/uk/ |
spellingShingle | Research Communications Sroor, Farid M. Liebing, Phil Hrib, Cristian G. Gräsing, Daniel Hilfert, Liane Edelmann, Frank T. Formation and structure of the first metal complexes comprising amidinoguanidinate ligands |
title | Formation and structure of the first metal complexes comprising amidinoguanidinate ligands |
title_full | Formation and structure of the first metal complexes comprising amidinoguanidinate ligands |
title_fullStr | Formation and structure of the first metal complexes comprising amidinoguanidinate ligands |
title_full_unstemmed | Formation and structure of the first metal complexes comprising amidinoguanidinate ligands |
title_short | Formation and structure of the first metal complexes comprising amidinoguanidinate ligands |
title_sort | formation and structure of the first metal complexes comprising amidinoguanidinate ligands |
topic | Research Communications |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5095825/ https://www.ncbi.nlm.nih.gov/pubmed/27840700 http://dx.doi.org/10.1107/S2056989016015322 |
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