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

using model chemistry: MP3/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3/cc-pVTZ
 hartrees
Energy at 0K-225.686655
Energy at 298.15K-225.692724
HF Energy-224.805157
Nuclear repulsion energy167.130666
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 MP3/cc-pVTZ
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 3292 3110 9.44      
2 A1 3129 2956 0.04      
3 A1 1750 1654 21.98      
4 A1 1453 1373 1.25      
5 A1 1426 1347 22.19      
6 A1 1276 1205 2.67      
7 A1 1056 998 0.91      
8 A1 957 904 14.42      
9 A2 1180 1115 0.00      
10 A2 942 890 0.00      
11 A2 553 522 0.00      
12 B1 3175 2999 0.19      
13 B1 1037 979 24.12      
14 B1 846 799 5.36      
15 B1 365 344 34.52      
16 B2 3276 3095 4.09      
17 B2 1818 1717 0.05      
18 B2 1440 1360 34.31      
19 B2 1276 1205 1.62      
20 B2 1103 1042 33.60      
21 B2 951 898 64.81      

Unscaled Zero Point Vibrational Energy (zpe) 16149.3 cm-1
Scaled (by 0.9447) Zero Point Vibrational Energy (zpe) 15256.3 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 MP3/cc-pVTZ
ABC
0.36299 0.30610 0.17147

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.201
N2 0.000 0.997 0.279
N3 0.000 -0.997 0.279
C4 0.000 0.726 -0.942
C5 0.000 -0.726 -0.942
H6 -0.891 0.000 1.823
H7 0.891 0.000 1.823
H8 0.000 1.467 -1.723
H9 0.000 -1.467 -1.723

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35781.35782.26272.26271.08731.08733.27133.2713
N21.35781.99391.25072.11222.04302.04302.05663.1748
N31.35781.99392.11221.25072.04302.04303.17482.0566
C42.26271.25072.11221.45302.99522.99521.07632.3284
C52.26272.11221.25071.45302.99522.99522.32841.0763
H61.08732.04302.04302.99522.99521.78263.94033.9403
H71.08732.04302.04302.99522.99521.78263.94033.9403
H83.27132.05663.17481.07632.32843.94033.94032.9339
H93.27133.17482.05662.32841.07633.94033.94032.9339

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 120.269 C1 N3 C5 120.269
N2 C1 N3 94.486 N2 C1 H6 112.883
N2 C1 H7 112.883 N2 C4 C5 102.488
N2 C4 H8 124.041 N3 C1 H6 112.883
N3 C1 H7 112.883 N3 C5 C4 102.488
N3 C5 H9 124.041 C4 C5 H9 133.471
C5 C4 H8 133.471 H6 C1 H7 110.114
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability