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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: CCSD(T)=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-225.693759
Energy at 298.15K-225.699654
HF Energy-224.793221
Nuclear repulsion energy166.449912
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)=FULL/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3260 3117        
2 A1 3091 2955        
3 A1 1690 1616        
4 A1 1443 1379        
5 A1 1405 1344        
6 A1 1257 1202        
7 A1 1036 990        
8 A1 929 888        
9 A2 1154 1103        
10 A2 808 773        
11 A2 510 488        
12 B1 3140 3002        
13 B1 1027 981        
14 B1 797 762        
15 B1 310 296        
16 B2 3245 3103        
17 B2 1749 1672        
18 B2 1410 1348        
19 B2 1267 1211        
20 B2 1090 1042        
21 B2 929 888        

Unscaled Zero Point Vibrational Energy (zpe) 15772.6 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 15078.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD(T)=FULL/TZVP
ABC
0.36200 0.30231 0.17013

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.208
N2 0.000 0.997 0.282
N3 0.000 -0.997 0.282
C4 0.000 0.728 -0.949
C5 0.000 -0.728 -0.949
H6 -0.897 0.000 1.829
H7 0.897 0.000 1.829
H8 0.000 1.474 -1.730
H9 0.000 -1.474 -1.730

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36101.36102.27672.27671.09151.09153.28713.2871
N21.36101.99451.26022.11932.04812.04812.06773.1866
N31.36101.99452.11931.26022.04812.04813.18662.0677
C42.27671.26022.11931.45563.00923.00921.08002.3360
C52.27672.11931.26021.45563.00923.00922.33601.0800
H61.09152.04812.04813.00923.00921.79493.95573.9557
H71.09152.04812.04813.00923.00921.79493.95573.9557
H83.28712.06773.18661.08002.33603.95573.95572.9477
H93.28713.18662.06772.33601.08003.95573.95572.9477

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 120.537 C1 N3 C5 120.537
N2 C1 N3 94.232 N2 C1 H6 112.790
N2 C1 H7 112.790 N2 C4 C5 102.347
N2 C4 H8 123.963 N3 C1 H6 112.790
N3 C1 H7 112.790 N3 C5 C4 102.347
N3 C5 H9 123.963 C4 C5 H9 133.690
C5 C4 H8 133.690 H6 C1 H7 110.608
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability