A sup 183 W NMR study of mononuclear tungsten(VI) methyl complexes containing terminal oxo, sulfido, and imido ligands

Journal Article · Tue Jan 01 00:00:00 EST 1991 · Inorganic Chemistry; (USA)

DOI:https://doi.org/10.1021/ic00001a013· OSTI ID:5760550

Ma, Yinong; Demou, P; Faller, J W ^[1]

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1. Yale Univ., New Haven, CT (USA)

The {sup 183}W chemical shifts of a number of organometallic oxo-, sulfido-, and imido-tungsten(VI) complexes have been measured by indirect detection using {sup 1}H({sup 183}W) double-resonance and {sup 1}H({sup 1}H, {sup 183}W) triple-resonance techniques. The shielding trends within a series of ligands, including O{sup 2{minus}}, S{sup 2{minus}}, PhN{sup 2{minus}}, Cl{sup {minus}}, Br{sup {minus}}, {eta}{sup 2}-O{sub 2}{sup 2{minus}}, and {eta}{sup 2}-S{sub 2}{sup 2{minus}}, are discussed with respect to ligand polarizability and bond multiplicity. The tungsten(VI) nuclei become more deshielded with increasing ligand polarizability and bond multiplicity. The {sup 183}W chemical shifts of Cp*W({double bond}O)X{sub 2}Me complexes show an inverse halogen dependence, as expected from relative polarizability arguments. 16 refs., 2 tabs.

• OSTI ID: 5760550
• Journal Information: Inorganic Chemistry; (USA), Vol. 30:1; ISSN 0020-1669
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ORGANIC NITROGEN COMPOUNDS
MOLECULAR STRUCTURE
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
TUNGSTEN COMPLEXES
CHEMICAL SHIFT
EXPERIMENTAL DATA
NMR SPECTRA
PROTONS
TUNGSTEN 183
BARYONS
COMPLEXES
DATA
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
FERMIONS
HADRONS
HEAVY NUCLEI
INFORMATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
NUCLEONS
NUMERICAL DATA
ORGANIC COMPOUNDS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
TRANSITION ELEMENT COMPLEXES
TUNGSTEN ISOTOPES
400201* - Chemical & Physicochemical Properties
400202 - Isotope Effects
Isotope Exchange
& Isotope Separation