Implications of Guanidine Substitution on Copper Complexes as Entatic‐State Models
Implications of Guanidine Substitution on Copper Complexes as Entatic‐State Models
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胍取代对铜配合物作为束缚态模型的影响
DOI:
10.1002/ejic.201600655
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发表时间:
2016
影响因子:
2.3
通讯作者:
S. Herres-Pawlis
中科院分区:
文献类型:
--
作者:
A. Hoffmann;J. Stanek;B. Dicke;L. Peters;B. Grimm-Lebsanft;A. Wetzel;A. Jesser;M. Bauer;M. Gnida;W. Meyer-Klaucke;M. Rübhausen;S. Herres-Pawlis
The guanidine–quinoline ligand dimethylethyleneguanidinoquinoline (DMEGqu) is able to stabilise bis(chelate) copper complexes in an intermediate geometry between tetrahedral and square‐planar environments. The structures of the obtained complexes model the entatic state and have been investigated in solid state by single‐crystal X‐ray diffraction and in the solid state and in solution by X‐ray absorption spectroscopy. The dimethylethyleneguanidine (DMEG) unit of the DMEGqu ligand displays a smaller steric encumbrance than the tetramethylguanidine (TMG) counterpart; this allows slightly larger structural changes upon oxidation than those for the TMG counterparts. Moreover, triflate coordination was possible for the CuIIDMEG complexes. DFT analyses revealed that good structural and optical descriptions are possible through the use of the hybrid functionals B3LYP and TPSSh in combination with the triple‐zeta basis set def2‐TZVP and the inclusion of empirical dispersion with Becke–Johnson damping and a suitable solvent model. The orbital analysis gives insights into the electronic structure of the complexes and their charge‐transfer behaviour.
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DOI:
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发表时间:
2010
期刊:
影响因子:
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作者:
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通讯作者:
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DOI:
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2008
期刊:
Dalton transactions (Cambridge, England : 2003)
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影响因子:
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1982
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通讯作者:
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DOI:
10.1039/c0mt00061b
发表时间:
2011-03
期刊:
Metallomics : integrated biometal science
影响因子:
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