Landolt-Brnstein Group II
: Molecules and Radicals
Volume 6 

Molecular Constants from Microwave, Molecular Beam, and Electron Spin Resonance Spectroscopy 

Introductory material 
1 
Introduction (B. STARCK, R. TISCHER, M. WINNEWISSER) 1

2 
Constants of diamagnetic molecules 5

2.1 
Survey 5

2.2 
Diatomic molecules: Rotational and related constants (R. TISCHER) 5

2.3 
Linear molecules: Rotational and related constants (J. DEMAISON) 42

2.4 
Symmetric top molecules: Rotational and related constants (J. DEMAISON) 59

2.5 
Asymmetric top molecules: Rotational and related constants (B. STARCK) 86

2.6 
Dipole moments 264

2.6.1 
Diatomic molecules (R. TISCHER) 264

2.6.2 
Linear and symmetric top molecules (J. DEMAISON) 276

2.6.3 
Asymmetric top molecules (B. STARCK) 281

2.7 
Quadrupole coupling constants 309

2.7.1 
Diatomic molecules (R. TISCHER) 309

2.7.2 
Linear and symmetric top molecules (J. DEMAISON, W. HTTNER) 324

2.7.3 
Asymmetric top molecules (W. HTTNER, B. STARCK) 333

2.8 
Hindered rotation (B. STARCK) 364

2.9 
Magnetic constants 387

2.9.1 
Diatomic molecules (R. TISCHER) 387

2.9.2 
Linear and symmetric top molecules (W. HTTNER) 406

2.9.3 
Asymmetric top molecules (W. HTTNER) 427

3 
Figures (I. BUCK) 453

4 
References for 2 and 3 (I. BUCK, B. STARCK, R. TISCHER) 479

5 
Constants of radicals 499

5.1 
Diatomic radicals (R. TISCHER) 499

5.1.1 
Preliminary remarks 499

5.1.2 
The 2Sigma electronic state 504

5.1.3 
The 3Sigma electronic state 512

5.1.4 
The 1Pi electronic state 525

5.1.5 
The 2Pi electronic state 528

5.1.6 
The 3Pi electronic state 570

5.1.7 
The 1Delta electronic state 584

5.2 
Triatomic radicals (M. WINNEWISSER) 589

5.2.0 
Introduction 589

5.2.1 
Linear triatomic radicals possessing a 2Pi electronic ground state 589

5.2.2 
Bent triatomic radicals 596

6 
Appendix 633

7 
Index of substances for volume II/4 and II/6 (B. STARCK) 645



