Molecular constants Subvol. B. Linear triatomic molecules / G. Guelachvili ; K. Narahari Rao. Ed. by G. Guelachvili Pt. 7. C2H- (HCC-), C2H+ (HCC+), C2O- (CCO-), C2O (CCO), C2S (CCS), C3 (CCC), C3++ (CCC++) Buch

With the advent of modern instruments and theories, a considerable amount of spectroscopic information has been collected on molecules during this last decade. The infrared, in particular, has seen extraordinary activity. Using Fourier transform interferometers and infrared lasers, accurate data have been measured often with extreme sensitivity. These data have also been analyzed and accurate molecular parameters determined. Volume II/20 "Molecular Constants mostly from Infrared Spectroscopy" is a recent Landolt-Börnstein publication series. It is made up of several subvolumes (A, B, C, D) with comprehensive compilation of critically evaluated molecular constants of diatomic (A), linear triatomic (B), other triatomic (C) and other polyatomic (D) molecules. 60 CCH- 1 60.1 H12C12C- 1 60.1.1 Molecular constants band centers, B, D, H, etc. 3 60.1.2 Other molecular parameters 3 60.1.3 Data 4 60.2 D12C12C- 10 60.3 D13C13C- 12 61 CCH+ 13 62 CCO- 14 63 CCO 19 63.1 12C12C16O 19 63.1.1 Molecular constants band centers, B, D, H, etc. 20 63.1.2 Other molecular parameters Spectroscopic constants, intensity, structure 24 63.1.3 Data 26 63.2 12C12C18O 36 63.3 12C13C16O 36 63.4 13C12C16O 37 64 CCS 38 64.1 12C12C32S 38 64.2 12C12C34S 41 64.3 12C13C32S 41 64.4 13C12C32S 42 64.5 13C13C32S 43 65 CCC 44 65.1 12C12C12C 44 65.1.1 Molecular constants band centers, B, D, H, etc. 45 Rovibronic energy levels 63 Ordered by energy level 63 Ordered by location 88 65.1.2 Other molecular parameters 113 65.1.2.1 Harmonic and anharmonic constants 113 65.1.2.2 Force constants 113 65.1.2.3 Intensities 114 65.1.2.4 Dipole moments 116 65.1.3 Data 119 Table 1 - 17 119 Table 18 - 38 130 Table 39 - 58 145 65.2 12C12C13C 159 65.3 12C13C12C 164 65.4 13C12C13C 168 65.5 13C13C12C 172 65.6 13C13C13C 176 65.7 14C12C12C 183 66 CCC++ 185 References 186 Introduction 198 I Energy level designations 198 II Effective Hamiltonians 200 II.1 Energy matrix 200 II.2 Energy expressions referred to the ground state 202 II.3 Conversion table for energy-related units and selected fundamental constants 204 III Formulas for determining rotational constants 206 III.1 Effective parameters 206 III.2 Band center and band origin 207 III.3 Comments on BHO HBO 208 III.4 Some specifics related to COS OCS 209 III.5 Quadrupole coupling 212 IV Potential energy function PEF 213 IV.1 PEF expanded as a Taylor series 213 IV.2 Curvilinear valence coordinates and Morse functions 214 IV.3 Dimensionless normal coordinates 214 IV.4 Specific forms of the PEF 214 V Dipole moment 217 V.1 General equations 217 V.2 Specifics related to COS OCS 218 VI Intensities 220 VI.1 Intensities of spectral lines 220 VI.2 Integrated absorption intensities 221 VI.3 Total internal partition sum 222 VI.4 F-factors Herman-Wallis factors 222 VI.5 Intensity expressions 223 VI.6 Intensity units and conversion table 224 VI.7 Line profiles 231 VI.8 Miscellaneous topics 232 VI.9 Einstein coefficient of spontaneous emission 234 VI.10 Rotational state transfer 234 VII Renner-Teller effect some aspects 236 VIII Some functional relations specially applicable to the molecular constants of CO2 238 VIII.1 Designations of the energy levels of CO2 238 VIII.2 Resonances in CO2 238 VIII.3 Potential-energy function PEF - Interaction potential 242 VIII.4 Dipole moment - Transition dipole moment 242 VIII.5 HITELOR High Temperature Low Resolution data base 243 VIII.6 Line mixing 243 VIII.7 Several functional relations in which effects of collisions are included 245 VIII.8 Self broadening and its temperature dependence 246 VIII.9 Foreign gas broadening 246 VIII.10 Transmittance at the center of a spectral line 246 VIII.11 Line mixing temperature and pressure dependence 247 VIII.12 Some formulas for the absorption coefficient kn 247 VIII.13 CO2 laser wave guide amplification and power saturation 248 VIII.14 Laser Stark spectroscopy 249 IX Some symbolism appearing in N2O data 250 X Some symbolism appearing in CO2+, CFeO, CFeO-, CNN, CNO and CNO- data 253 X.1 Aspects of some notations in polyatomic molecules 253 X.2 CO2+ 253 X.3 CFeO for which the electronic ground state is 3Sigma- 258 X.4 CNN NCN 259 XI Some functional relations for CS2, CSe2 and C2N molecules and ions 261 XI.1 CS2 SCS and CSe2 SeCSe 261 XI.2 C2N CCN and C2N CNC 261 XII Some symbolism appearing in C2H CCH 267 XIII List of symbols 268 60 CCH-....Pages 1-12 61 CCH+....Pages 13-13 62 CCO-....Pages 14-18 63 CCO....Pages 18-36 64 CCS....Pages 37-42 65.1 (12C)(12C)(12C)....Pages 43-43 Molecular constants....Pages 44-61 Rovibronic energy levels....Pages 62-111 65.1.2 Other molecular parameters....Pages 112-117 Table 1 - 17....Pages 117-127 Table 18 - 38....Pages 128-142 Table 39 - 58....Pages 143-156 65.2 (12C)(12C)(13C)....Pages 157-161 65.3 (12C)(13C)(12C)....Pages 162-165 65.4 (13C)(12C)(13C)....Pages 166-169 65.5 (13C)(13C)(12C)....Pages 170-173 65.6 (13C)(13C)(13C)....Pages 174-180 65.7 (14C)(12C)(12C)....Pages 181-182 66 CCC++....Pages 182-182 References....Pages 183-194 I Energy level designations....Pages 1-2 II Effective Hamiltonians....Pages 1-6 III Formulas for determining rotational constants....Pages 1-7 IV Potential energy function (PEF)....Pages 1-4 V Dipole moment....Pages 1-3 VI Intensities....Pages 1-16 VII Renner-Teller effect (some aspects)....Pages 1-2 VIII Some functional relations specially applicable to the molecular constants of CO2....Pages 1-12 IX Some symbolism appearing in N2O data....Pages 1-3 X Some symbolism appearing in CO2+, CFeO, CFeO-, CNN, CNO and CNO- data....Pages 1-8 XI Some functional relations for CS2, CSe2 and C2N molecules and ions....Pages 1-6 XII Some symbolism appearing in C2H (CCH)....Pages 1-1 XIII List of symbols....Pages 1-6