Mechanochemical and solution synthesis, and crystal structures and IR and solid-state (CPMAS) NMR spectroscopy of some bis(triphenylphosphine)silver(i) mono- and di-hydrogencitrate systems

2012 ◽  
Vol 41 (17) ◽  
pp. 5409 ◽  
Author(s):  
Graham A. Bowmaker ◽  
John V. Hanna ◽  
Brian W. Skelton ◽  
Allan H. White
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Crystal Structures ◽  
Solution Synthesis

Alkylaluminum, -gallium, -magnesium, and -zinc monophenolates with bulky substituents

2018 ◽  
Vol 73 (11) ◽  
pp. 943-951 ◽  
Author(s):  
Clint E. Price ◽  
Ana B. Dantas ◽  
Douglas R. Powell ◽  
Rudolf J. Wehmschulte
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Crystal Structures ◽  
Structure Data ◽  
Crystal Structure Data ◽  
The Other ◽  
Zinc Compounds ◽  
C Nmr

AbstractThe bulky phenols 2,6-Ad2C6H3OH (Ad=adamantyl), A, (2,6-Ph2CH)2-4-Me-C6H2OH, B, and (2,6-Tol2CH)2-4-iPr-C6H2OH, C, react with one equivalent of Et3M (M=Al, Ga), Bu2Mg and Et2Zn to afford well-defined mono-phenolate complexes (ArOMRn)m. The aluminum and gallium phenolates derived from the very bulky phenol A are likely monomeric in the solid state. The other compounds are dimeric with bridging phenolates. Crystal structures of compounds with phenols B and C display the dimeric M2O2 cores of the phenolates and illustrate some deviations for the magnesium and zinc compounds. The former possesses stabilizing Mg···C contacts with one of the flanking arene groups of the phenolate substituent, and the latter may be viewed as an intermediate between a symmetric dimer and two monomers. All compounds were characterized by 1H and 13C NMR spectroscopy, and their solution spectra are in agreement with the crystal structure data.

Intermediates in the Palladium-Catalyzed Reaction of 1,3-Dienes, Part 6 [1]

1991 ◽  
Vol 46 (10) ◽  
pp. 1395-1405 ◽  
Author(s):  
R. Benn ◽  
P. Betz ◽  
R. Goddard ◽  
P. W. Jolly ◽  
N. Kokel ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Crystal Structures ◽  
Platinum Compound ◽  
Nickel Compound ◽  
X Ray Diffraction ◽  
X Ray ◽  
Palladium Catalyzed ◽  
Cp Mas Nmr ◽  
Bonding Mode

The structure of the (1,3-butadiene)M(R2PC2H4PR2) compounds (M = Ni, Pd, Pt; R = Pri, Bu′, Cy) in the solid-state have been investigated by 13C and 31P CP/MAS NMR spectroscopy. The bonding mode adopted by the diene is dependent upon the nature of the metal: the palladium compounds contain an η2-diene molecule, the nickel compound where R is cyclohexyl contains an η4-diene molecule whereas the Pr2iPC2H4PPr2i-stabilized platinum compound con- tains a platinacyclopentene ring. The crystal structures of (η2-1,3-C4H6)Pd(Cy2PC2H4PCy2) and (η4-1,3-C4H6)Ni(Cy2PC2H4PCy2) have been confirmed by X-ray diffraction.

The chemistry of platinum hydrides. Part XXX. The chemical and structural effects of steric overcrowding in the compounds cis- and trans-H[R3Sn]Pt(PCy3)2, R = Ph, Cl

1988 ◽  
Vol 66 (12) ◽  
pp. 3120-3127 ◽  
Author(s):  
Howard C. Clark ◽  
George Ferguson ◽  
Mark J. Hampden-Smith ◽  
Heinz Ruegger ◽  
Barbara L. Ruhl
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Crystal Structures ◽  
Trans Isomer ◽  
Nmr Spectra ◽  
Structural Effects ◽  
Initial Product ◽  
Multinuclear Nmr Spectroscopy ◽  
Cis And Trans

The reaction of Pt0(PCy3)2 with triphenyltin hydride yields cis-H(Ph3Sn)Pt(PCy3)2 as the initial product; isomerization to the trans isomer is accelerated by light, heat, and the presence of free phosphine. Both isomers have been characterized by multinuclear nmr spectroscopy; in particular, the 31P {1H} spectra in solution are correlated with the solid state CP/MAS 31P nmr spectra and the crystal structure. The crystal structures of trans-H(X3Sn)Pt(PCy3)2 X = Ph or Cl have been determined and the nature of the distortions produced by steric overcrowding is identified and discussed.

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