EPR study of intramolecular dynamics in o-semiquinonic nickel complexes with PCP-pincer ligand in solution

2004 ◽  
pp. 2957 ◽  
Author(s):  
Konstantin A. Kozhanov ◽  
Michael P. Bubnov ◽  
Vladimir K. Cherkasov ◽  
Georgy K. Fukin ◽  
Gleb A. Abakumov
Keyword(s):  
Nickel Complexes ◽  
Intramolecular Dynamics ◽  
Pincer Ligand ◽  
Pcp Pincer

A hexanuclear iridium complex with a novel binding mode of a PCP–pincer ligand

2004 ◽  
Vol 357 (10) ◽  
pp. 3014-3018 ◽  
Author(s):  
Xiawei Zhang ◽  
Thomas J Emge ◽  
Alan S Goldman
Keyword(s):  
Binding Mode ◽  
Iridium Complex ◽  
Pincer Ligand ◽  
Pcp Pincer

Transfer hydrogenation of ketones catalyzed by nickel complexes bearing an NHC [CNN] pincer ligand

2019 ◽  
Vol 33 (6) ◽  
pp. e4932 ◽  
Author(s):  
Zijing Wang ◽  
Xiaoyan Li ◽  
Shangqing Xie ◽  
Tingting Zheng ◽  
Hongjian Sun
Keyword(s):  
Nickel Complexes ◽  
Transfer Hydrogenation ◽  
Pincer Ligand

scholarly journals A Ruthenium(II) Complex Stabilized by a Highly Fluorinated PCP Pincer Ligand

2005 ◽  
Vol 24 (19) ◽  
pp. 4553-4557 ◽  
Author(s):  
Marcella Gagliardo ◽  
Preston A. Chase ◽  
Martin Lutz ◽  
Anthony L. Spek ◽  
Frantisek Hartl ◽  
...  
Keyword(s):  
Pincer Ligand ◽  
Pcp Pincer

scholarly journals Crystal structure of an iridium(III) complex of the [C(dppm)2] PCP pincer ligand system and its conjugate CH acid form

2018 ◽  
Vol 74 (5) ◽  
pp. 620-624 ◽  
Author(s):  
Christian Reitsamer ◽  
Inge Schlapp-Hackl ◽  
Gabriel Partl ◽  
Walter Schuh ◽  
Holger Kopacka ◽  
...  
Keyword(s):  
Carbon Atom ◽  
Iridium Complexes ◽  
Pincer Ligand ◽  
Single Crystal Diffraction ◽  
Dalton Trans ◽  
Ligand System ◽  
Distorted Octahedral ◽  
Major Interest ◽  
Carbonyl Bond ◽  
Pcp Pincer

After the successful creation of the newly designed PCP carbodiphosphorane (CDP) ligand [Reitsamer et al. (2012). Dalton Trans. 41, 3503–3514; Stallinger et al. (2007). Chem. Commun. pp. 510–512], the treatment of this PCP pincer system with the transition metal iridium and further the analysis of the structures by single-crystal diffraction and by NMR spectroscopy were of major interest. Two different iridium complexes, namely (bis{[(diphenylphosphanyl)methyl]diphenylphosphanylidene}methane-κ3 P,C,P′)carbonylchloridohydridoiridium(III) chloride dichloromethane trisolvate, [IrIII(CO){C(dppm)2-κ3 P,C,P′}ClH]Cl·3CH2Cl2 (1) and the closely related (bis{[(diphenylphosphanyl)methyl]diphenylphosphanylidene}methanide(1+)-κ3 P,C,P′)carbonylchloridohydridoiridium(III) dichloride–hydrochloric acid–water (1/2/5.5), [IrIII(CO){CH(dppm)2-κ3 P,C,P′)ClH]Cl}2 (2), have been designed and both complexes show a slightly distorted octahedral coordinated IrIII centre. The PCP pincer ligand system is arranged in a meridional manner, the CO ligand is located trans to the central PCP carbon and a hydride and chloride are located perpendicular above and below the P2C2 plane. With an Ir—CCDP distance of 2.157 (5) Å, an Ir—CO distance of 1.891 (6) Å and a quite short C—O distance of 1.117 (7) Å, complex 1 presents a strong carbonyl bond. Complex 2, the corresponding CH acid of 1, shows an additionally attached proton at the carbodiphosphorane carbon atom located antiperiplanar to the hydride of the metal centre. In comparison with complex 1, the Ir—CCDP distance of 2.207 (3) Å is lengthened and the Ir—C—O values indicate a weaker trans influence of the central carbodiphosphorane carbon atom.

o-Semiquinonic PCP-pincer nickel complexes with alkyl substituents: versatile coordination sphere dynamics

2008 ◽  
pp. 2849 ◽  
Author(s):  
Konstantin A. Kozhanov ◽  
Michael P. Bubnov ◽  
Vladimir K. Cherkasov ◽  
Nina N. Vavilina ◽  
Larisa Yu. Efremova ◽  
...  
Keyword(s):  
Coordination Sphere ◽  
Nickel Complexes ◽  
Pcp Pincer

scholarly journals A PCP Pincer Ligand for Coordination Polymers with Versatile Chemical Reactivity: Selective Activation of CO2 Gas over CO Gas in the Solid State

2016 ◽  
Vol 128 (40) ◽  
pp. 12539-12543 ◽  
Author(s):  
Junpeng He ◽  
Nolan W. Waggoner ◽  
Samuel G. Dunning ◽  
Alexander Steiner ◽  
Vincent M. Lynch ◽  
...  
Keyword(s):  
Solid State ◽  
Coordination Polymers ◽  
Chemical Reactivity ◽  
Pincer Ligand ◽  
Selective Activation ◽  
Co2 Gas ◽  
Pcp Pincer ◽  
Co Gas

N-heterocyclic phosphenium and phosphido nickel complexes supported by a pincer ligand framework

2016 ◽  
Vol 45 (5) ◽  
pp. 1918-1929 ◽  
Author(s):  
Deirdra A. Evers-McGregor ◽  
Mark W. Bezpalko ◽  
Bruce M. Foxman ◽  
Christine M. Thomas
Keyword(s):  
Nickel Complexes ◽  
Tridentate Ligand ◽  
Pincer Ligand ◽  
Redox States

A tridentate ligand framework containing a central N-heterocyclic phosphenium cation (NHP+) has been coordinated to nickel. Among the compounds reported is a series of [(PPP)Ni]20/+/2+ dimers in three different redox states.

Selective hydration of nitriles to amides catalysed by PCP pincer supported nickel(ii) complexes

2015 ◽  
Vol 44 (27) ◽  
pp. 12082-12085 ◽  
Author(s):  
J. Borau-Garcia ◽  
D. V. Gutsulyak ◽  
R. J. Burford ◽  
W. E. Piers
Keyword(s):  
Pincer Ligand ◽  
Mild Conditions ◽  
Pcp Pincer

Nickel(ii) hydroxo compounds supported by an electron rich PCP pincer ligand are active catalysts for the selective hydration of a variety of nitriles at low catalyst loadings and mild conditions.

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