This volume, a Landolt-Börnstein publication, contains a comprehensive compilation of critically evaluated molecular constants of diatomic (A), linear triatomic (B), other triatomic (C) and other polyatomic (D) molecules.

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. The first subvolume, II/20B1, published in 1995, deals with 39 linear triatomic molecules and their + + isotopic species, from BClH (HBCl ) to COSe (OCSe), given in the alphabetical order of their Hill s formulas as indicated below: + + 1 BClH (HBCl ) 9 BeF2 (FBeF) 17 CCaN (CaNC) 25 CHN (HNC) 33 CMgN (MgCN) + + + + 2 BClH (BClH ) 10 CBaN (BaCN) 18 CClN (ClCN) 26 CHO (HCO ) 34 CMgN (MgNC) + + + + ? ? 3 BClO (OBCl) 11 CBaN (BaNC) 19 CClN (ClCN) 27 CHO (HOC) 35 CNO (NCO ) + + 4 BFH (HBF ) 12 CBeN (BeCN) 20 CClP (ClCP) 28 CHP (HCP) 36 CNS (NCS) + + ? ? 5 BFO (FBO) 13 CBeN (BeNC) 21 CFN (FCN) 29 CHS (HCS) 37 CNS (NCS )

Standard Reference Book with selected and easily retrievable data from the fields of physics and chemistry collected by acknowledged international scientists.

Also available online in www.springerlink.com

http://www.landolt-boernstein.com

Includes supplementary material: sn.pub/extras

Inhalt
Energy level designations.- Effective Hamiltonians.- Formulas for determining rotational constants.- Potential energy function (PEF).- Dipole moment.- Intensities.- Aspects of the Renner-Teller effect.- Functional relations specific to the molecular constants of CO2.- Some symbolism appearing in N2O data.- Some symbolism appearing in CO2 +, CFeO, CFeO-, CNN, CNO and CNO- data.- Some functional relations for CS2, CSe2 and C2N molecules and ions.- Some symbolism appearing in C2H.- XIII List of Symbols.- List of Tables for B9.- 82 AgArBr (Ar-AgBr).- 83 AgArCl (Ar-AgCl).- 84 AgArF (Ar-AgF).- 85 AlNAl (AlNAl).- 86 Al2N- (AlNAl-).- 87 Al2O (AlOAl).- 88 AlCN (AlCN).- 89 AlCN (AlNC).- 90 AlN2 (Al-NN).- 91 AlN2 (NAlN).- 92 AlN2 + (Al-N2 +).- 93 Ar2Ca+ (ArCa+Ar).- 94 Ar3 + (ArArAr+).- 95 ArBrCu (Ar-CuBr).- 96 ArBrH (Ar-HBr).- 97 ArClCu (Ar-CuCl).- 98 ArClH (Ar-HCl).- 99 ArCN+ (ArCN+).- 100 ArCuF(Ar-CuF).- 101 ArHO (Ar-OH).- 102 B2N (BBN).- 103 B2N- (BBN-).- 104 B2N (BNB).- 105 B2N- (BNB-).- 106 B2N+ (BBN+).- 107 B2N+ (BNB+).- 108 B2O (BBO).- 109 B2O (BOB).- 110 BC2 - (C2B-).- 111 CClO (OCCl).- 112 Ga2N (GaNGa).- 113 Ga2O (GaOGa).- 114 GaN2 (NGaN).- 115 HOY (YOH).- 116 In2N (InNIn).- 117 InN2 (In-NN).- 118 InN2 (NInN).- 119 InN2 + (In-NN+).- 120 Li2O (LiOLi).- 121 N3 - (NNN-).- 122 N3 + (NNN+).- 123 NOS+ (ONS+).- 124 N3 (NNN).