Synthesis, structure, and sup 31 P NMR spectra of Mo sub 2 W sub 2 Cl sub 8 (PR sub 3 ) sub 4 rectangular clusters
Journal Article
·
· Inorganic Chemistry; (USA)
- Ames Lab., IA (USA)
The new compounds Mo{sub 2}W{sub 2}Cl{sub 8}(PMe{sub 3}){sub 4}{center dot}{sub 4}H{sub 8}O (I) and Mo{sub 2}W{sub 2}Cl{sub 8} (P(n-Bu){sub 3}){sub 4} (II) have been prepared by cycloaddition reactions of MoW(O{sub 2}CCMe{sub 3}){sub 4}. Yellow-green crystals of I provided crystallographic data for a complete structure determination: tetragonal, space group P4{sub 2}2{sub 1}2, a = 12.6443 (8) {angstrom}, c = 11.2854 (9) {angstrom}, V = 1804.3 {angstrom}{sup 3} Z = 2, R = 0.034, R{sub w} = 0.045. Disordering of the Mo and W atoms on the metal atom sites permits only averaged M-M, M-Cl, and M-P distances for the rectangular cluster units. Of principal interest were the M{triple bond}M and M-M distances of 2.275 (1) and 2.843 (1) {angstrom}, respectively, for the short and long edges of the Mo{sub 2}W{sub 2} rectangular cluster units. A study of the {sup 31}P({sup 1}H) NMR spectrum for a solution of II showed that coupling of the Mo-{sup 4}W dinuclear units provided two isomers, IIa and IIb, in a ratio of ca. 1.5:1.0. Isomer IIa was assigned as arising from head-to-tail coupling, and IIb as arising from head-to-head coupling of the two MoW units. Electronic spectral data for II are also reported. 16 refs., 6 figs., 4 tabs.
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6985558
- Journal Information:
- Inorganic Chemistry; (USA), Journal Name: Inorganic Chemistry; (USA) Vol. 28:18; ISSN 0020-1669; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stereochemistry of bis(carboxylato)dichlorobis(tertiary phosphine)dimolybdenum complexes. Crystal and molecular structure of two isomers of Mo/sub 2/(O/sub 2/CCMe/sub 3/)/sub 2/Cl/sub 2/(PEt/sub 3/)/sub 2/
Molybdenum complexes of 1,2-bis(diphenylphosphino)benzene. Mononuclear molybdenum(II) species formed by facile metal-metal bond cleavage of the (Mo-/sup 4/Mo)/sup 4+/ core
Dinuclear cyclopentadienyl carbonyl and alkyne complexes of niobium(II) and tantalum(II). Structures of ((C sub 5 H sub 4 Me)Nb(. mu. -Cl)(CO) sub 2 ) sub 2 , ((C sub 5 H sub 4 Me)Nb(. mu. -Cl)(ArC triple bond CAr)) sub 2 , and ((C sub 5 Me sub 5 )Ta(. mu. -Cl)(CO) sub 2 ) sub 2
Journal Article
·
Thu Jul 01 00:00:00 EDT 1982
· Inorg. Chem.; (United States)
·
OSTI ID:6876964
Molybdenum complexes of 1,2-bis(diphenylphosphino)benzene. Mononuclear molybdenum(II) species formed by facile metal-metal bond cleavage of the (Mo-/sup 4/Mo)/sup 4+/ core
Journal Article
·
Wed Jul 27 00:00:00 EDT 1988
· Inorg. Chem.; (United States)
·
OSTI ID:5833138
Dinuclear cyclopentadienyl carbonyl and alkyne complexes of niobium(II) and tantalum(II). Structures of ((C sub 5 H sub 4 Me)Nb(. mu. -Cl)(CO) sub 2 ) sub 2 , ((C sub 5 H sub 4 Me)Nb(. mu. -Cl)(ArC triple bond CAr)) sub 2 , and ((C sub 5 Me sub 5 )Ta(. mu. -Cl)(CO) sub 2 ) sub 2
Journal Article
·
Mon Dec 31 23:00:00 EST 1990
· Organometallics; (United States)
·
OSTI ID:6106825
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALKANES
BARYONS
CHLORINE COMPOUNDS
COMPLEXES
CRYSTAL STRUCTURE
DATA
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONS
HALOGEN COMPOUNDS
HYDROCARBONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MOLYBDENUM COMPLEXES
NMR SPECTRA
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PHOSPHORUS 31
PHOSPHORUS COMPOUNDS
PHOSPHORUS ISOTOPES
PROTONS
SPECTRA
STABLE ISOTOPES
TRANSITION ELEMENT COMPLEXES
TUNGSTEN COMPLEXES
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALKANES
BARYONS
CHLORINE COMPOUNDS
COMPLEXES
CRYSTAL STRUCTURE
DATA
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONS
HALOGEN COMPOUNDS
HYDROCARBONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MOLYBDENUM COMPLEXES
NMR SPECTRA
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PHOSPHORUS 31
PHOSPHORUS COMPOUNDS
PHOSPHORUS ISOTOPES
PROTONS
SPECTRA
STABLE ISOTOPES
TRANSITION ELEMENT COMPLEXES
TUNGSTEN COMPLEXES