Bonding mode variations in palladium(II) and platinum(II) azaphosphole complexes: Identification by /sup 1/H, /sup 31/P, and /sup 195/Pt (NMR of N- and P-coordination, Pt-Cl addition to P, and dimerization
The 1,2,3-diazaphosphole P/double bond/C(H)C(Me)/double bond/NNMe (L/sub A/) and the 1,2,4,3-triazaphospholes P/double bond/NC(Ph)/double bond/NNMe (L/sub B/) and P/double bond/NN(Me)C(Me)/double bond/N (L/sub C/) react with the halo-bridged dimers (MX/sub 2/(PEt/sub 3/))/sub 2/ (M = Pt/sup II/, Pd/sup II/) to afford a variety of products with MX/sub 2/(PEt/sub 3/)L (L = di- or triazaphosphole) stoichiometry. With (PdCl/sub 2/(PEt/sub 3/))/sub 2/ these azaphospholes produce trans-(PdCl/sub 2/(PEt/sub 3/)L) with /sigma/-N-bonded L. From (PtBr/sub 2/(PEt/sub 3/))/sub 2/ is obtained (PtBr/sub 2/(PEt/sub 3/)L) as a mixture of the cis /sigma/-P coordination isomer with lesser amounts of the trans /sigma/-N isomer. These azaphospholes all afford different products with (PtCl/sub 2/(PEt/sub 3/))/sub 2/; the diazaphosphole L/sub A/ produces mononuclear cis-(PtCl/sub 2/(PEt/sub 3/)L/sub A/) (/sigma/-P bound) whereas the triazaphospholes L/sub B/ and L/sub C/ produce dinuclear species that have symmetric and asymmetric structures, respectively. The new air-sensitive complexes have been principally characterized by a combination of /sup 1/H, /sup 31/P, and /sup 195/Pt NMR solution spectroscopy. 23 refs., 8 figs., 3 tabs.
- Research Organization:
- Univ. of Amsterdam (Netherlands)
- OSTI ID:
- 5708306
- Journal Information:
- Inorg. Chem.; (United States), Vol. 27:15
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKANES
CHEMICAL BONDS
AROMATICS
HETEROCYCLIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PALLADIUM COMPLEXES
PLATINUM COMPLEXES
EXPERIMENTAL DATA
NUCLEAR MAGNETIC RESONANCE
PHOSPHORUS 31
PLATINUM 195
PROTONS
BARYONS
COMPLEXES
DATA
DAYS LIVING RADIOISOTOPES
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
FERMIONS
HADRONS
HEAVY NUCLEI
HYDROCARBONS
INFORMATION
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PHOSPHORUS ISOTOPES
PLATINUM ISOTOPES
RADIOISOTOPES
RESONANCE
STABLE ISOTOPES
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
400202 - Isotope Effects
Isotope Exchange
& Isotope Separation