Author: Torsten K. G. EriksonPublisher:
ISBN:
Category : Rhenium compounds
Languages : en
Pages : 258
Book Description
Synthesis, Characterization, and Reactivity of Low-valent Rhenium Oxo-alkoxide and Hydride Complexes
Author: Torsten K. G. EriksonPublisher:
ISBN:
Category : Rhenium compounds
Languages : en
Pages : 258
Book Description
The Synthesis, Characterization and Reactivity of High Oxidation State Rhenium Imido and Oxo Complexes
Author: Tiow-Gan OngSynthesis, Characterization and Reactivity of Rhenium(I) Tris(acetylene) and Oxo Bis(acetylene) Complexes; Oxygen Atom Transfer Reactions of Rhenium Triazacyclononane Compounds
Author: Rebecca Renae ConryPublisher:
ISBN:
Category : Oxo compounds
Languages : en
Pages : 174
Book Description
Synthesis, Characterization, and Reactivity of Technetium and Rhenium Complexes in Intermediate Oxidation States
Author: Harvey Stewart TropPublisher:
ISBN:
Category : Chemical reactions
Languages : en
Pages : 482
Book Description
Synthesis, Characterization and Reactivity Study of Low Valent Ruthenium Olefin Complexes
Author: Xiuxiu YangSynthesis, Characterization and Reactivity of Rhenium(III) Complexes for Catalytic, Stoichiometric and Insertion Reactions
Author: Damaris Esther PérezPublisher:
ISBN:
Category :
Languages : en
Pages : 123
Book Description
Synthesis, Characterization, and Reactivity of Prochiral Ruthenium Clusters and Bimetallic Rhenium Complexes with an Unsymmetrical Diphosphine and Hard-Soft Donor Ligands
Author: Darrell D. MayberrySynthesis, Characterization, and Reactivity of Rhenium Dithiodiolate and Monothiodiolate Complexes
Author: Pitak ChuawongPublisher:
ISBN:
Category : Organorhenium compounds
Languages : en
Pages : 190
Book Description
The rhenium dithiodiolate, Hydrido-tris-(3,5-dimethyl- 1 -pyrazol yl) borato(ethane- 1,2-dithiodiolato)(oxo)rheni um(V), and Hydrido-tris-(3,5-dimethyl- 1 -pyrazolyl)borato(phenylethanedithiodiolato)(oxo)rhenium(V), were synthesized by reductive cyclocondensation of alkane-1,2-dithiols with Tp'Re03 in a one pot fashion. The rhemium monothiodiolate, Hydrido-tris-(3,5-dimethyl- 1 -pyrazolyl) borato(ethane- 1,2-monothiodiolato)(oxo)rhenium(V), and Hydrido-tris-(3,5- dimethyl- 1 -pyrazolyl)borato(propanemonothiodiolato)(oxo)rhenium(V), were also synthesized by using the same procedure. The syn and anti isomers of rhenium phenylethanedithiodiolate and rhenium propanemonothiodiolate were characterized by using COSY, nOe, and HSQC experiments. An X-ray crystal structure of the rhenium ethanedithiodiolate was obtained, and an unusually small dihedral angle (S-C-C-S) of about 12° was observed. The solution conformation of these compounds was investigated by using a Karplus relationship between vicinal coupling constants and dihedral angle. The dihedral angle for the ethanedithiodiolate appeared to be 38° indicating a staggered geometry for the ring. All of these complexes failed to cyclorevert to any detectable extent at 120°C after 7 days. This observation reflects the thermal stability of rhenium dithiodiolate and monothiodiolate complexes. Energetics of ethylene addition to tetrathioperrhenate anion (ReS4−) and addition of hydrogen sulfide to the alkene adduct were calculated by DFT calculation using LACVP** basis set with B3LYP functionals. The heat of reaction of ethylene addition to ReS4− was 15.4 kcal/mol, and 111.1 kcal/mol for addition of hydrogen sulfide to the alkene adduct. These results are consistent with the stability of the dithiodiolate complex toward cycloreversion reaction. Reaction of Tp'Re03 and ethylene sulfide led to the rhenium ethanedithiolate complex both with and without acid catalysis. This observation led to a proposed multi step mechanism.
Structure, Dynamics, and Thermal and Photochemical Reactivity of Low Valent Rhenium Hydride Complexes
Author: John A. MaguireAmerican Doctoral Dissertations
Author: Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 806
Book Description