Search
Now showing items 51-60 of 318
Hydride thiolate derivatives of low valent iron complexes
(1993)
The highly electron-rich, bis(phosphite) iron hydride complex [Et4N][HFe(CO)2(P(OPh)3)2] has provided synthetic entry to the simple, mono-functional iron thiolates (ArS)Fe(CO)2(P(OPh)3)2- (Ar = Ph, Tol). Both the metal ...
Reaction and EPR spectra of "MCl4.2PR3" (M=V, Nb, Ta) compounds and study of some amidato-bridged dirhenium compounds
(1994)
The reaction solution of triethylphosphine with MCl4 (M = V, Nb, Ta) has been reported to show electron paramagnetic resonance signals at both room temperature and low temperature. The axial behavior of the low temperature ...
Far infrared and nuclear magnetic resonance spectra of molecules with internal rotor groups
(1965)
The torsional frequencies for 1,2-butadiene, methyl phosphine and 1-chIoro-1, 1-difIuoroethane were observed in the far infrared at 153.9, 207 and 246 cm⁻¹ respectively. The corresponding barriers to internal rotation were ...
Correlations between structure and nuclear magnetic resonance (N.M.R.) spectra for aliphatic esters
(1965)
The n.m.r. chemical shift for 18 acetate esters, CH₃COOR', and 16 methyl esters, RCOOCH₃, have been measured neat and in carbon tetrachloride solution. The n.m.r. chemical shifts of acetate esters, CH₃COOR', are controlled ...
Synthesis via haloketene cycloadducts
(1975)
The basic goal of this study was to develop new applications for haloketene cycloadducts in synthesis. This study has utilized the dichloroketene adduct of cyclohexene (5) as the starting material for the preparation of ...
CNDO/2-CI calculations on aromatic hydrocarbons
(1970)
The CNDO/2 scheme is used to calculate the ground state wavefunctions for benzene, naphthalene, azulene, biphenylene, anthracene, phenanthrene, 1, 8 dimethylnaphthalene and 2, 3 dimethylnaphthalene. The core and resonance ...
Stereochemical studies of coordination complexes. : I. Spectropolarimetric titrations of metal ions using D-(-)-Trans-1,2-cyclohexanediaminetetraacetic acid. II. Optical rotatory dispersion and circular dichroism studies of transition metal complexes of stereospecific ligands
(1970)
A method is described for the spectropolarimetric titrations of the group IIA and lanthanide (III) metal ions using D-(-)-trans-1,2-cyclohexanediaminetetraacetic acid (D(-)CDTA) as the titrant. A photoelectric polarimeter ...
Exploratory studies in the synthesis and characterization of a series of polysaccharide stereoregular polyelectrolytes
(1972)
A series of sodium dextran sulfates was synthesized under a variety of reaction conditions using as the sulfating agent a complex of N,N-dimethylformamide-sulfur trioxide in a mixed solvent system of dimethylsulfoxide and ...