SOLID-LIQUID PHASE EQUILIBRIUM IN BINARY SYSTEMS OF TRIPHENYL ANTIMONY WITH BIPHENYL, NAPHTHALENE, AND BENZOIC ACID.
Physical Sciences Research Papers,
AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS
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During the course of zone refining studies on a number of binary organic systems, it became necessary to determine their phase diagrams. Using the isoplethal method of thermal analysis, the diagrams were derived for three systems triphenyl antimony-benzoic acid triphenyl antimony-biphenyl triphenyl antimony-naphthalene. All three systems are of the single eutectic type. The eutectic points are at 0.797 mole fraction triphenyl-antimony 293K in biphenyl 0.766 mole fraction triphenyl-antimony 298K in naphthalene 0.868 mole fraction triphenylantimony 305K in benzoic acid. The eutectic temperatures in these systems were determined with some difficulty. The cooling curves exhibited no temperature halts or irregularities therefore it was concluded that no compound formation existed. The available pair of electrons on triphenyl antimony apparently did not interact with any of the three organic solvents. This behavior is similar to that of the trihalides of As, Sb, and Bi in which there is very little tendency to utilize the unshared electrons in donor-acceptor reactions. Author