Greenwood, Norman N. published the artcileProperties and thermochemistry of complexes of pyridine with triphenyl-boron, -aluminum, -gallium, and -indium, and diphenylgallium chloride, Recommanded Product: Triphenyl(pyridin-1-ium-1-yl)borate, the publication is Journal of the Chemical Society [Section] A: Inorganic, Physical, Theoretical (1969), 249-53, database is CAplus.
Pyridine reacts with crystalline Ph3B, Ph3Al, Ph3Ga, Ph3In, and Ph2GaCl to give white 1:1 complexes which are monomeric in benzene solution The melting points and heats of formation of the solid adducts from liquid pyridine and crystalline acceptors are: Ph3B. py, 240°, 17.9 kcal. mole-1; Ph3Al.py, 168°, 22.3 kcal. mole-1; Ph3Ga.py, 167°, 19.5 kcal. mole-1; Ph3In.py, 130°, 13.9 kcal. mole-1; Ph2GaCl.py, 18.0 kcal. mole.-1 The problems attending the estimation of gas-phase heats of formation and the calculation of reorganization energies are discussed and the results compared with those available on other Group III acceptors.
Journal of the Chemical Society [Section] A: Inorganic, Physical, Theoretical published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, Recommanded Product: Triphenyl(pyridin-1-ium-1-yl)borate.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem