Palladium(II) complexes of diphenylvinyl- and phenyldivinylphosphine
Journal Article
·
· Inorg. Chem.; (United States)
Palladium(II) complexes of the ligands L = Ph/sub 2/PCH/double bond/CH/sub 2/ and PhP(CH/double bond/CH/sub 2/)/sub 2/ have been prepared and characterized by elemental analysis, infrared spectroscopy, and /sup 1/H, /sup 1/H(/sup 31/P), /sup 13/C(/sup 1/H), /sup 31/P(/sup 1/H), and /sup 1/H//sup 13/C HETCOR nuclear magnetic resonance spectroscopy. These complexes exist as temperature-dependent equilibrium mixtures of cis and trans isomers in solution. Equilibrium thermodynamics for the isomerization process cis-L/sub 2/PdX/sub 2/ /rightleftharpoons/ trans-L/sub 2/PdX/sub 2/, determined by variable-temperature /sup 31/P(/sup 1/H) NMR spectroscopy, demonstrate that the cis isomers are in general thermodynamically more stable than the trans isomers. However, the relatively isomer stabilities are anion dependent with the trans isomer becoming more stable in the order Cl < Br < I. Coordination of a vinylphosphine to palladium(II) strongly polarizes the C/double bond/C double bond as evidenced by /sup 13/C NMR data. 27 refs., 2 figs., 4 tabs.
- Research Organization:
- Univ. of Nevada, Reno (USA)
- OSTI ID:
- 5826130
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 27:8; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
BARYONS
CARBON 13
CARBON ISOTOPES
CHEMICAL PREPARATION
COMPLEXES
DATA
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
HADRONS
HETEROCYCLIC COMPOUNDS
INFORMATION
ISOTOPES
LIGHT NUCLEI
NMR SPECTRA
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PALLADIUM COMPLEXES
PHOSPHINES
PHOSPHORUS 31
PHOSPHORUS COMPOUNDS
PHOSPHORUS ISOTOPES
PROTONS
SPECTRA
STABLE ISOTOPES
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
BARYONS
CARBON 13
CARBON ISOTOPES
CHEMICAL PREPARATION
COMPLEXES
DATA
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
HADRONS
HETEROCYCLIC COMPOUNDS
INFORMATION
ISOTOPES
LIGHT NUCLEI
NMR SPECTRA
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PALLADIUM COMPLEXES
PHOSPHINES
PHOSPHORUS 31
PHOSPHORUS COMPOUNDS
PHOSPHORUS ISOTOPES
PROTONS
SPECTRA
STABLE ISOTOPES
SYNTHESIS
TRANSITION ELEMENT COMPLEXES