Canadian Journal of Research/Canadian journal of research · 1941 · 34 citations · 1 references
Natural SciencesChemistryPhysicsMolecular PhysicsOrganic ChemistrySpectroscopyElectronic Band StructureElectronic StructureMolecular RotationRotational SpectroscopyRotational StructureVibrational StructureElectronic Structure AnalysisElectronic Structure Of MoleculesFine Structure ConstantsGround State PropertiesMolecular Rotational ConstantsRotational-vibrational StructureVibrational Band StructureVibrational Fine Structure
The 1 Π− 1 Σ + system of the BCl molecule has been photographed in the sixth order of a 20 ft. grating. The previous interpretation of the vibrational structure by Miescher (5) is slightly modified. The new formula for the Q heads of the B 11 Cl 35 molecule is[Formula: see text]The fine structure of a number of bands has been measured and analysed, leading to the following accurate values for the rotational constants: B′ e = 0.7054 cm. −1 , α′ e = 0.00820 cm. −1 , B″ e = 0.6838 cm. −1 , α″ e = 0.00646 cm. −1 . The internuclear distance in the ground state is r″ e = 1.716.10 −8 cm. The molecular constants of BCl are compared with those of the iso-electronic molecules CS, PN, and SiO as well as with those of BBr, BCls, and BBr 3 .
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