X-ray crystal structure and homonuclear sup 31 P- sup 31 P. delta. /J-resolved NMR spectroscopic studies of (AgIr sub 2 (dimen) sub 4 (PPh sub 3 ) sub 2 )(PF sub 6 ) sub 3. Observation of a statistical mixture of head/tail isomers
- Univ. of Minnesota, Minneapolis (USA)
The reaction of (AgIr{sub 2}(dimen){sub 4}(PF{sub 6}){sub 3}) (dimen = 1,8-diisocyanomenthane) with 2 equiv of triphenylphosphine results in the coordination of triphenylphosphine to the iridium atoms and forms a linear P-Ir-Ag-Ir-P unit. Recrystallization of the compound from acetone/hexane solutions afforded crystals of (AgIr{sub 2}(dimen){sub 4}(PPh{sub 3}){sub 2})(PF{sub 6}){sub 3} (AgIr{sub 2}C{sub 84}H{sub 102}F{sub 18}N{sub 8}P{sub 5}) that were the subject of X-ray structural characterization. The structure features an encapsulated two-coordinate Ag{sup +} ion with Ir{sup +}-Ag{sup +} distances of 2.642 (1) {angstrom}. The dimen ligands are disordered in a head to tail fashion about the iridium metal centers. Homonuclear {sup 31}P{l brace}H{r brace} {delta}/J-resolved NMR data for solutions of the (AgIr{sub 2}(dimen){sub 4}(PPh{sub 3}){sub 2}){sup 3+} cation show that a statistical distribution of four different geometrical isomers with different head to tail orientations of the dimen ligand occurs in the complex. 20 refs. 5 figs., 3 tabs.
- OSTI ID:
- 5873063
- Journal Information:
- Inorganic Chemistry; (USA), Vol. 29:22; ISSN 0020-1669
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
IRIDIUM COMPLEXES
CHEMICAL PREPARATION
ORGANIC NITROGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHORUS FLUORIDES
SILVER COMPLEXES
CRYSTAL STRUCTURE
EXPERIMENTAL DATA
NMR SPECTRA
PHOSPHORUS 31
COMPLEXES
DATA
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
ISOTOPES
LIGHT NUCLEI
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOSPHORUS ISOTOPES
SPECTRA
STABLE ISOTOPES
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
400202 - Isotope Effects
Isotope Exchange
& Isotope Separation