TY - JOUR
T1 - The permanent electric dipole moments of WN and ReN and nuclear quadrupole interaction in ReN
AU - Steimle, Timothy
AU - Virgo, Wilton L.
PY - 2004/12/22
Y1 - 2004/12/22
N2 - The high-resolution laser induced fluorescence spectra of tungsten mononitride WN and rhenium mononitride ReN have been recorded in a laser ablation/molecular beam spectrometer. The field free spectrum of the (0,0)A 4Π 3/2-X 4Σ 1/2 - band system of 186WN has been analyzed to produce B ″, B ′, and γ ″ values of 0.4659(2), 0.4554(2), and 0.0518(1) cm -1, respectively. The permanent electric dipole moments μ for the X 4Σ 1/2 - and A 4Π 3/2 state were determined to be 3.77(18) and 2.45(3) D, respectively, from the analysis of the optical Stark effect. The (0,0)[26.0]0 +-X0 + band system of ReN was recorded in the presence of a variable static electric field. The ground and excited state electric dipole moments of 187ReN were determined to be μ(X0 +)=1.96(8)D and μ([26.0]0 +)=3.53(4)D. Splittings in the field free 187ReN spectrum were analyzed to produce 187Re(I=5/2) nuclear electric quadrupole coupling constants e 2Qq 0 of -0.0304(8) and 0.0328(9) cm -1 for the X0 + and [26.0]0 + states, respectively. A molecular orbital correlation model is used to interpret the observation and a comparison is made to CrN and MoN.
AB - The high-resolution laser induced fluorescence spectra of tungsten mononitride WN and rhenium mononitride ReN have been recorded in a laser ablation/molecular beam spectrometer. The field free spectrum of the (0,0)A 4Π 3/2-X 4Σ 1/2 - band system of 186WN has been analyzed to produce B ″, B ′, and γ ″ values of 0.4659(2), 0.4554(2), and 0.0518(1) cm -1, respectively. The permanent electric dipole moments μ for the X 4Σ 1/2 - and A 4Π 3/2 state were determined to be 3.77(18) and 2.45(3) D, respectively, from the analysis of the optical Stark effect. The (0,0)[26.0]0 +-X0 + band system of ReN was recorded in the presence of a variable static electric field. The ground and excited state electric dipole moments of 187ReN were determined to be μ(X0 +)=1.96(8)D and μ([26.0]0 +)=3.53(4)D. Splittings in the field free 187ReN spectrum were analyzed to produce 187Re(I=5/2) nuclear electric quadrupole coupling constants e 2Qq 0 of -0.0304(8) and 0.0328(9) cm -1 for the X0 + and [26.0]0 + states, respectively. A molecular orbital correlation model is used to interpret the observation and a comparison is made to CrN and MoN.
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U2 - 10.1063/1.1822917
DO - 10.1063/1.1822917
M3 - Article
C2 - 15606261
AN - SCOPUS:22944447458
SN - 0021-9606
VL - 121
SP - 12411
EP - 12420
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
IS - 24
ER -