The permanent electric dipole moment of vanadium monosulfide.
A number of low-J lines of the C (4)Sigma(-) <-- X (4)Sigma(-) (0,0) band of a supersonic molecular beam sample of vanadium monosulfide (VS) have been recorded at a resolution of approximately 50 MHz by laser excitation spectroscopy. The electric field induced shift and splitting have been analyzed to give the permanent electric dipole moments mu of the C (4)Sigma(-)(upsilon = 0) and X (4)Sigma(-)(upsilon = 0) states as 2.38(13) and 5.16(5) D, respectively. An electrostatic model is used to predict mu for VS and VO. A molecular orbital correlation diagram is used to rationalize the trends in experimentally observed mu values of the 3d-monosulfides and 3d-monoxides. A comparison with theoretical predictions is made.
Zhuang
Xiujuan
X
Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA.
Steimle
Timothy C
TC