179679-67-5Relevant academic research and scientific papers
Formation of exceptionally weak C-C bonds by metal-templated pinacol coupling
Folkertsma,Benthem,Witteman,Van Slagmaat,Lutz,Klein Gebbink,Moret
supporting information, p. 6177 - 6182 (2017/07/10)
The ability of the bis(imidazolyl)ketone ligand BMdiPhIK (bis(1-methyl-4,5-diphenylimidazolyl)ketone) to function as a redox active ligand has been investigated. The reduction of [M(BMdiPhIK)Cl2] (M = Fe and Zn) complexes
Efficient Synthesis of a Porphyrin - N-Tripod Conjugate with Covalently Linked Proximal Ligand: Toward New-Generation Active-Site Models of Cytochrome c Oxidase
Collman, James P.,Zhong, Min,Wang, Zhong,Rapta, Miroslav,Rose, Eric
, p. 2121 - 2124 (2008/02/09)
Matrix Presented A new-generation cytochrome c oxidase active-site model compound (4) featuring both a trisimidazolyl moiety and a proximal base has been designed and efficiently synthesized. During this study, a facile method based on the chemistry of a
A Bis(diimidazole)copper Complex Possessing a Reversible CuII/CuI Couple with a High Redox Potential
McMaster, Jonathan,Beddoes, Roy L.,Collison, David,Eardley, David R.,Helliwell, Madeleine,Garner, C. David
, p. 685 - 693 (2007/10/03)
The new diimidazole ligand, bis(1-methyl-4,5-diphenylimidazol-2-yl)ketone (BIMDPK), has been synthesised, characterised and shown to form four-coordinate bis(diimidazole) CuII and CuI complexes in the salts 2 and , the structures of which have been determined by X-ray crystallography.The cations of these salts have a very similar geometry with CuII-Nav=1.949 and CuI-Nav=1.999 Angstroem; the N-Cu-N interbond angles are constrained by 1) the bite angle of the BIMDPK ligand to 94+/-2 deg and 2) the interligand steric interactions, which lead to the dihedral angle of the interligand CuN2 planes of 68.2 deg for CuII and 74.9 for CuI-that is, a CuN4 geometry intermediate between tetrahedral and square planar.The X-band EPR spectrum for the powdered CuII compound is typical of an approximately D2 CuN4 centre possessing a dxy ground state (gx=2.080, gy=2.075, gz=2.291; Az=112.3*10-4 cm-1).The UV/vis spectra are dominated by charge-transfer bands, and both the CuII and CuI systems are intensely coloured.The EPR and electronic spectra indicate that these cations have a very similar structure in the solid state and in solution; the potential of the 2+/+ couple is 0.59 V vs.SCE in MeCN and 0.80 V vs.SCE in CH2Cl2, and the made electron self-exchange constant in MeCN is 1.9*104M-1s-1.Comparisons are between the properties of the 2+/+ centers and related Cu centers in chemical and biological systems; the results of this study reinforce the view that a centre should not be precluded from consideration in biological electron transport. - Keywords: copper complexes; imidazole ligands; redox systems; structure elucidation; enzyme models
