Sangster Research Laboratories

Montréal, Canada

Sangster Research Laboratories

Montréal, Canada

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Sangster J.M.,Sangster Research Laboratories
Journal of Phase Equilibria and Diffusion | Year: 2010

A study was conducted to investigate the formation of the cesium-phosphorus (Cs-P) system. Cs 4P 6 was prepared by reaction of the elements and characterized by XRD. Cs 3P 11 was prepared by reaction of the elements in stoichiometric amounts. The room temperature crystalline form transformed to a plastic-crystalline form in a first-order process at 409 °C. Cs 2P 4 was isolated as a solid solvated product Cs 2P 42N 3, which was characterized by XRD. Cs 4P 14 in solvated form was detected by 31P-NMR as a product of the reaction of Cs 4P 6 with white phosphorus in ethylenediamine. The structural chemistry of these compounds was complex as P had the ability to form polyanions of many different configurations.


Sangster J.M.,Sangster Research Laboratories
Journal of Phase Equilibria and Diffusion | Year: 2010

A study was conducted to investigate the formation of the phosphorus-rubidium (P-Rb) system. Rb 4P 6 was prepared by reaction of the elements and characterized by XRD. Rb 3P 7 was prepared from the elements as the ammoniate and as an ether-solvated ammoniate in liquid ammonia. Rb 3P 11 was prepared by reaction of the elements in stoichiometric amounts. The structural chemistry of these compounds was complex as P had the ability to form polyanions of many different configurations. The heat capacity of Rb 3P 7 was measured by differential scanning calorimetry (DSC) in the range 120-770 K. The solid transition temperature and enthalpy of transition were deduced from these data.


Sangster J.M.,Sangster Research Laboratories
Journal of Phase Equilibria and Diffusion | Year: 2010

A study was conducted to review the preparation and structure of sodium and phosphorus compounds with alkali metals. It was appropriate to distinguish between compounds isolated and characterized as solids and those prepared in solution. Na 3P was prepared by reaction of the elements in hydrocarbon solvent, or in liquid ammonia, or by the reaction of Na with white P in toluene. It was also prepared by reaction of the elements in stoichiometric amounts without solvent. It was characterized by powder single crystal XRD. Na 2P was considered to be a product of the reaction of Na with white P in liquid ammonia. Another investigation of the reaction in liquid ammonia led to the conclusion that Na 4P 2 was a mixture of Na 2H 2P 2.


Sangster J.M.,Sangster Research Laboratories
Journal of Phase Equilibria and Diffusion | Year: 2010

A study was conducted to investigate the formation of the potassium-phosphorous (K-P) system. K 3P was prepared by reaction of the elements in liquid ammonia or in liquid hydrocarbon prepared this compound by the reduction of PCl 3 or PCl 5 with K. It was better prepared by reaction of K with white or red P in stoichiometric amounts without solvent and characterized by powder XRD. KP was prepared by the reaction of the elements and it was characterized by single-crystal XRD. K 4P 6 was prepared by reaction of the elements in stoichiometric ratio that existed in two forms. K 4P 6 was prepared by reaction of the elements in liquid ammonia. KP 5 was prepared by reaction of the elements in liquid ammonia solution. KP 7 was identified initially as KP x, product of the reaction between K and white P.

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