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Studies on the Interaction of Poly(phenylene methylene) with Silver(I) and Hexacarbonylchromium(0).
Polymers (Basel)
August 2022
Department of Materials, ETH Zürich, 8093 Zürich, Switzerland.
Complexes of poly(phenylene methylene) (PPM) with silver(I) ions and tricarbonylchromium(0) moieties, respectively, were synthesized. C NMR spectra indicate interaction of phenylene groups with silver(I) and chromium(0), and peak broadening implies dynamic behavior of the silver(I) complexes, with all phenylene groups temporarily involved in coordination, in contrast to the chromium complexes. About 5-10% of the phenylene groups are coordinated to metal atoms.
View Article and Find Full Text PDFMolecular motions in a fluxional (η-indenyl)tricarbonylchromium hemichelate: a density functional theory molecular dynamics study.
Dalton Trans
July 2018
Univ. Grenoble-Alpes CNRS, DCM, F-38000 Grenoble, France.
A comprehensive Density Functional Theory (DFT) study is reported on molecular motions occurring in a hemichelate complex, formally composed of the (η3-2-methylallyl)Pd(ii) cation bonded to a (η6-indenyl)tricarbonylchromium anion, that has been recognized as being highly fluxional in a previous experimental study (C. Werlé, M. Hamdaoui, C.
View Article and Find Full Text PDFIntricacies of ligand coordination in tricarbonylchromium(0) complexes with ortho- and para-fluorobiphenyls.
Acta Crystallogr C Struct Chem
August 2017
Department of Chemistry and Biochemistry, University of Wisconsin-La Crosse, 1725 State Street, La Crosse, WI 54601, USA.
The steric and electronic factors that influence which of the two rings of a substituted biphenyl ligand coordinates to chromium are of interest and it has been suggested that haptotropic rearrangements within these molecules may be limited if the arene-arene dihedral angle is too large. Two tricarbonylchromium(0) complexes and their respective free ligands have been characterized by single-crystal X-ray diffraction. In the solid state, tricarbonyl[(1',2',3',4',5',6'-η)-2-fluoro-1,1'-biphenyl]chromium(0), [Cr(CHF)(CO)], (I), exists as the more stable isomer with the nonhalogenated arene ring ligated to the metal center.
View Article and Find Full Text PDFNovel mononuclear and 1D-polymeric derivatives of lanthanides and (η-benzoic acid)tricarbonylchromium: synthesis, structure and magnetism.
Dalton Trans
March 2017
N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, 119991 Moscow, Russian Federation.
Two series of novel heteroleptic derivatives of lanthanides and (η-benzoic acid)tricarbonylchromium (benchrotrenecarboxylic acid) were synthesized and characterized: mononuclear complexes [Ln(BcrCOO)(acac)(HO)] (Ln = Eu (1), Gd (2), Tb (3a), Dy (4a), Ho (5a)) and 1D-polymeric ones [Ln(BcrCOO)(acac)(HO)] (Ln = Tb (3b), Dy (4b), Ho (5b), Er (6), Tm (7), Yb (8) and Y (9)), Bcr = (η-CH)Cr(CO). The molecular and crystal structures of the obtained compounds were determined. Complexes 3a, 4a, 4b, 6 and 8 were found to exhibit SMM properties.
View Article and Find Full Text PDFThe first nucleophilic C-H perfluoroalkylation of aromatic compounds via (arene)tricarbonylchromium complexes.
Chem Commun (Camb)
February 2017
Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanskaya Street, 02660, Kiev, Ukraine.
The first nucleophilic perfluoroalkylation of arenes is based on the arene π-system activation via (η-arene)tricarbonylchromium complexes. Perfluoroalkyl anions generated from MeSiR and a fluoride ion source [MeN]F exclusively attack the arene ligand under mild conditions. The formed negatively charged analogs of Meisenheimer adducts readily undergo a one-pot oxidation to perfluoroalkyl arenes.
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