Showing papers in "Canadian Journal of Chemistry in 1968"
TL;DR: In this paper, the reaction of tri-n-octylphosphine with carbon tetrachloride solutions of the corresponding alcohols was described, which is a fast and high-yield reaction.
Abstract: Primary and secondary alkyl chlorides have been conveniently prepared by the reaction of tri-n-octylphosphine with carbon tetrachloride solutions of the corresponding alcohols. This rapid, high yie...
213 citations
TL;DR: In this article, a number of diketimine ligands of structure 1 were synthesized and given bis-bidentate chelates of type 2 with Cu(II), Ni(II, and Co(II).
Abstract: The synthesis of a number of diketimine ligands of structure 1 is reported. These give bis-bidentate chelates of type 2 with Cu(II), Ni(II), and Co(II). Optical spectra, magnetic moments and, in a ...
195 citations
TL;DR: The crystal structures of the spinels Co3O4, NiCo2O4 and NiCoS4 were refined from X-ray and neutron powder data in this article.
Abstract: The crystal structures of the spinels Co3O4, NiCo2O4, Co3S4, and NiCo2S4 were refined from X-ray and neutron powder data. Their lattice parameters at room temperature and the positional parameters ...
194 citations
TL;DR: In this article, it was shown that two types of adsorption sites exist on the surface of porous silica glass (Corning code no. 7930) for the adaption of polar molecules, such as ammonia.
Abstract: It has been shown previously that two types of adsorption sites exist on the surface of porous silica glass (Corning code no. 7930) for the adsorption of polar molecules, such as ammonia. One site ...
177 citations
TL;DR: In this paper, the chemical shifts for 29Si in seven series of molecules of the type XnSiY4−n have been measured where Y is an alkyl group and X varies widely in electronegativity.
Abstract: Chemical shifts for 29Si in seven series of molecules of the type XnSiY4−n have been measured where Y is an alkyl group and X varies widely in electronegativity. A considerable amount of proton and...
176 citations
TL;DR: The preparations of complexes of the type L2M(RC2R′) (where L 2m(RC 2 r′) as mentioned in this paper is the number of complexes required to construct a complex) are described in Section 2.1.
Abstract: The preparations of complexes of the type L2M(RC2R′) (where L = Ph3P, M = Ni, Pd, Pt, R = R′ = CF3; L = Ph3P, M = Ni, Pt, R = R′ = Ph, and R = Ph, R′ = Me; L = Ph3P, M = Pd, Pt, R = R′ = COOMe; and...
147 citations
TL;DR: In this article, the Ramaman spectra of aqueous alkali metal nitrate solutions have been recorded at 25 °C for a wide range of concentrations, including dilute solutions.
Abstract: Raman (R) and infrared (I) spectra of aqueous alkali metal nitrate solutions have been recorded at 25 °C for a wide range of concentrations. In dilute solution the nitrate ion is perturbed by solve...
134 citations
TL;DR: In this article, the thermal decomposition of rare earth acetates as well as lead and copper acetates have been investigated in detail by employing thermogravimetric analysis and differential thermal analysis.
Abstract: The infrared spectra of rare earth acetates have been studied to examine the metal-acetate bonding. The thermal decomposition of rare earth acetates as well as lead and copper acetates have been investigated in detail by employing thermogravimetric analysis and differential thermal analysis. Thermal decomposition of calcium dicarboxylates (malonate to sebacate) have been studied employing t.g.a. and d.t.a. Infrared spectra of the dicarboxylates have also been studied. Preliminary results on the products of decomposition of dicarboxylates have been reported.
133 citations
TL;DR: In this article, the infrared spectra of phenylboronic acid, normal and deuterated, and diphenyl pboronate have been recorded in the range 4000-300 cm−1 and assignments of the observed frequencies have been made.
Abstract: The infrared spectra of phenylboronic acid, normal and deuterated, and diphenyl phenylboronate have been recorded in the range 4000–300 cm−1 and assignments of the observed frequencies have been ma...
127 citations
TL;DR: In this article, the electrochemical formation and reduction of surface oxide at platinum electrodes have been carried out with particular reference to polarization and hysteresis effects in these proces, and the results showed that surface oxide can be formed and reduced at the platinum electrodes.
Abstract: Studies on the electrochemical formation and reduction of surface oxide at platinum electrodes have been carried out with particular reference to polarization and hysteresis effects in these proces...
127 citations
TL;DR: In this article, a number of compositions and of related mixed phases were prepared and investigated, and the lower limit of the r(A3+):r(Sn4+) ratio for cubic pyrochlore stannates is about 1.19 (Ahrens radii), while the upper limit is at least 1.60.
Abstract: A number of compositions and of related mixed phases were prepared and investigated. For the trivalent lanthanons from La to Lu, and for Y, the homogeneous A2Sn2O7 phases were of the cubic pyrochlore type (space group Fd3m, No. 227). Their lattice parameters gave a very good linear relationship when plotted against the Templeton–Dauben radii of A3+. The applicability of other sets of ionic radii was also tested. The lower limit of the r(A3+):r(Sn4+) ratio for cubic pyrochlore stannates is about 1.19 (Ahrens radii), while the upper limit is at least 1.60. Attempts to extend the lower limit by preparing mixed Yb + Sc stannates were only partially successful. Bi2Sn2O7 is not a cubic pyrochlore.The structures of Y2Sn2O7 and Sm2Sn2O7 were refined from X-ray powder data, and that of La2Sn2O7, from neutron powder data. The positional parameter of the majority oxygen atom, x(O2), has been found to increase with the size of A3+. The distortion of the SnO6 octahedra in the pyrochlore structure thus decreases with i...
TL;DR: In this article, the Hartree-Fock wave functions were used to compare the formation of stable and unstable molecular species in terms of their respective charge distributions for H2 and Li2.
Abstract: The process of bond formation as a function of internuclear separation for H2 and Li2 is interpreted in terms of the changes in the charge distributions and the forces which they exert on the nuclei. The charge distributions are calculated from extended Hartree–Fock wave functions which reduce to the Hartree–Fock atomic functions for infinite nuclear separation. The results for H2 indicate that at separations greater than 5 a.u. the net attractive force exerted on the approaching nuclei arises from a simultaneous inwards polarization of the atomic charge distributions. For separations less than 5 a.u. the nuclei are bound by the force exerted by the delocalized component of the charge distribution. The density distributions and forces for He2 over a range of internuclear separations are compared with those for H2 to contrast the formation of stable and unstable molecular species in terms of their respective charge distributions.The final section of the paper examines in detail the changes in the Hartree–F...
TL;DR: The crystal structure of triclinic potassium dichromate has been determined by single crystal X-ray diffraction as discussed by the authors, and the cell constants are a = 13.367, b ǫ = 7.376, c à 0.445A, α à = à 1.75°, β à 2.21°, γ à 3.
Abstract: The crystal structure of triclinic potassium dichromate has been determined by single crystal X-ray diffraction. The cell constants are a = 13.367, b = 7.376, c = 7.445 A, α = 90.75°, β = 96.21°, γ...
TL;DR: Some anhydrous transition metal acetates have been prepared and their infrared spectra measured in the solid state as discussed by the authors, including Co(II), Cu(II, Ni(II) and Zn(II).
Abstract: Some anhydrous transition metal acetates (Mn(II), Co(II), Cu(II), Ni(II), Zn(II), Ag(I), Mo(II), Ce(III), La(III)) have been prepared and their infrared spectra measured in the solid state. The inf...
TL;DR: When cultured in stirred fermentors the yeast Candida bogoriensis produces extracellular glycolipids in yields of 0.5 to 1 g/l, the principal component of these is a crystalline sophorosyl hydroxy ...
Abstract: When cultured in stirred fermentors the yeast Candida bogoriensis produces extracellular glycolipids in yields of 0.5 to 1 g/l. The principal component of these is a crystalline sophorosyl hydroxy ...
TL;DR: The crystal structure of zirconyl chloride octahydrate, ZrOCl2•8H2O, has been refined by the least-squares method with new three-dimensional data as mentioned in this paper.
Abstract: The crystal structure of zirconyl chloride octahydrate, ZrOCl2•8H2O, has been refined by the least-squares method with new three-dimensional data. Existence of the [Zr4(OH)8(H2O)16]8+ tetranuclear ...
TL;DR: A(1,3) type strain was demonstrated directly from the nuclear magnetic resonance studies of the acyl and nitroso derivatives of 2-methylpiperidine (2 series) and 2,6-cis-dimethylpidine (1 serie... as discussed by the authors.
Abstract: A(1,3) type strain was demonstrated directly from the nuclear magnetic resonance studies of the acyl and nitroso derivatives of 2-methylpiperidine (2 series) and 2,6-cis-dimethylpiperidine (1 serie...
TL;DR: A survey of the alkali soluble polysaccharides of yeast cells shows that galactomannans are formed by certain species of the genera Trichosporon, Schizosaccharomyces, and Nadsonia.
Abstract: A survey of the alkali soluble polysaccharides of yeast cells shows that galactomannans are formed by certain species of the genera Trichosporon, Schizosaccharomyces, and Nadsonia. Different specie...
TL;DR: The new compounds M(SC6F5) as discussed by the authors, where M = Pb, Tl, Cu, Au, and Ph3Pb, and N = Ni, and Pt have been prepared from pentafluorothiophophoric acid.
Abstract: The new compounds M(SC6F5), where M = Cs, Tl, Cu, Au, and Ph3Pb; M(SC6F5)2, where M = Pb, Cd, Hg, Ni, and Pt; M(SC6F5)3, where M = As or Bi; and Sn(SC6F5)4 have been prepared from pentafluorothioph...
TL;DR: The complete structures of the major components of the mixture of lactonic and acidic sophorosides of 17-L-hydroxyoctadecanoic acid, which is produced by a yeast of the genus Torulopsis, have been given in this article.
Abstract: The complete structures of the major components of the mixture of lactonic and acidic sophorosides of 17-L-hydroxyoctadecanoic acid, which is produced by a yeast of the genus Torulopsis, have been ...
TL;DR: The aqueous dissociation constants for a number of substituted picric acids and related compounds have been determined spectrophotometrically, and the values obtained correlated with the mid-equiva....
Abstract: The aqueous dissociation constants for a number of substituted picric acids and related compounds have been determined spectrophotometrically, and the values obtained correlated with the mid-equiva...
TL;DR: In this article, a simple method was explored for the preparation of methyl 4,6-O-benzylidene-hex-2-enopyranosides.
Abstract: A simple method was explored for the preparation of methyl 4,6-O-benzylidene-hex-2-enopyranosides. Methyl 2,3-anhydro-4,6-O-benzylidene-D-hexopyranosides were converted to diaxial iodohydrins using...
TL;DR: At 95-115°, paraformaldehyde and hydriodic acid completely C-methylate aromatics such as benzene and phenol, carbethoxy and acetyl groups being lost as mentioned in this paper.
Abstract: At 95–115°, paraformaldehyde and hydriodic acid completely C-methylate aromatics such as benzene and phenol. Pyrroles are C-methylated similarly, carbethoxy and acetyl groups being lost. In hydriod...
TL;DR: In this article, the absorption bands due to the OH and OD stretching vibrations of HDO in ice were measured between 0 and −182° and compared with the corresponding bands in liquid water.
Abstract: The absorption bands due to the OH and OD stretching vibrations of HDO in ice were measured between 0 and −182° and compared with the corresponding bands in liquid water. Their frequencies were cor...
TL;DR: The degree of substitution varies with the dye to polysaccharide ratio used in the reaction and with the structu... as mentioned in this paper, which is a well-known property of Procion dyes.
Abstract: Polysaccharides have been shown to react with Procion dyes to give colored products. The degree of substitution varies with the dye to polysaccharide ratio used in the reaction and with the structu...
TL;DR: In this paper, the 23Na chemical shifts, extrapolated to infinite dilution, of solutions containing sodium iodide dissolved in 14 different oxygen or nitrogen donor organic solvents have been determined.
Abstract: The 23Na chemical shifts, extrapolated to infinite dilution, of solutions containing sodium iodide dissolved in 14 different oxygen or nitrogen donor organic solvents have been determined. The obse...
TL;DR: The reaction between 1,2,3-thiadiazoles, unsubstituted in the 5-position, and a strong base such as an organolithium compound, sodamide, sodium methylsulfinyl carbanion, or potassium t-butoxide res...
Abstract: The reaction between 1,2,3-thiadiazoles, unsubstituted in the 5-position, and a strong base such as an organolithium compound, sodamide, sodium methylsulfinyl carbanion, or potassium t-butoxide res...
TL;DR: In this article, absolute rate constants have been measured for the reactions of cumylperoxy radicals with a number of hydrocarbons, such as cumene hydroperoxide, and they show that sufficient hydr...
Abstract: Absolute rate constants have been measured for the reactions of cumylperoxy radicals with a number of hydrocarbons. The cumylperoxy radicals were produced from cumene hydroperoxide. Sufficient hydr...
TL;DR: In this article, a series of 107 1,4-naphthoquinones and related products has been synthesized to study their mode of action in bacterial growth inhibition.
Abstract: A series of 107 1,4-naphthoquinones and related products has been synthesized to study their mode of action in bacterial growth inhibition. The in vitro reactions of a number of these with aniline,...
TL;DR: Cobalt(II) halide complexes [CoX2•2L] (X = Cl, Br, I and L = 2-thiazolidinethione) and [CoL4] (ClO4)2 have been prepared and infrared spectral study suggests that the probable site of bonding in the ligand is nitrogen as discussed by the authors.
Abstract: Cobalt(II) halide complexes [CoX2•2L] (X = Cl, Br, I and L = 2-thiazolidinethione) and [CoL4] (ClO4)2 have been prepared The infrared spectral study suggests that the probable site of bonding in the ligand is nitrogen The results of electronic spectral study and magnetic susceptibility measurements indicate that the complexes are tetrahedral in structure The various ligand field parameters Dq, B′, and β show about 80% covalency in the complexes and suggest a weak ligand field