Mechanistic studies on reactivities of organometallic macrocyclic complexes of chromium and cobalt

• Main Author: Shi, Shu.
• Other Authors: United States. Department of Energy. Office of Energy Research.
• Format: Report
• Language: English
• Published: Ames Laboratory 1990
• Subjects: Inorganic Phosphors; Elements; Chemical Reactions; Iodine Compounds; Chromium Complexes; Organic Compounds; Alkali Metal Compounds; Oxidation; Chemical Radiation Effects; Dispersions; Complexes; Sodium Bromides; Numerical Data; Cobalt Complexes; Leptons; Thiocyanates; Data; Transition Element Complexes 400201* > Chemical & Physicochemical Properties; Sodium Iodides; Radiolysis; Bromides; Antithyroid Drugs; Hormone Antagonists; 38 Radiation Chemistry; Radiochemistry; And Nuclear Chemistry; Radiation Effects; Phosphors; Carbon Compounds; Electrons; Chemistry; Organic Sulfur Compounds; Pulsed Irradiation; Drugs; Iodine; Irradiation; Elementary Particles; Halogen Compounds; Aqueous Solutions; Experimental Data; Solutions; Information; Bromine Compounds; Iodides; Halides; Halogens; Carbonic Acid Derivatives; 400600 > Radiation Chemistry; 37 Inorganic; Organic; Physical And Analytical Chemistry; Nonmetals; Sodium Compounds; Fermions; Chemical Bonds; Mixtures; Decomposition; Organometallic Compounds; Radiation Chemistry; Carbonic acid
• Online Access: https://doi.org/10.2172/6222164; https://digital.library.unt.edu/ark:/67531/metadc1114580/

Reaction pathways leading to the formation and cleavage of a transition metal-carbon bond at various oxidation states of the metal occupy a central position in understanding many enzymatic reactions and designing catalysts. The report is divided into six parts that (1) focus on the homolysis vs heterolysis of a C-Cr(III) bond, (2) describes a unique chain reaction and a S{sub E}2 reaction I{sub 2} and RCrL{sup 2+}, (3) concerns the oxidation of organochromium(III) complexes by dihalide and pseudo-dihalide radical anions generated by pulse radiolysis, (4) concentrates on the oxidation mechanism of RCr(H{sub 2}O){sup 2+} and the fate of RCr(H{sub 2}O){sup 3+} as well as the corresponding reduction potentials, (5) extends study of organocobalt complexes with attention to reduction induced cleavages of a transition metal-carbon bond, and (6) describes the crystallization of ((CH{sub 3}){sub 4}N)(Co(dmgBF{sub 2}){sub 2}py) and reports its molecular structure as determined by x-ray diffraction. 182 refs., 25 figs., 16 tabs. (BM)