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

using model chemistry: MP2=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-225.461365
Energy at 298.15K-225.467351
HF Energy-224.739787
Nuclear repulsion energy165.880198
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 MP2=FULL/cc-pVDZ
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 3289 3126 9.71      
2 A1 3129 2974 0.28      
3 A1 1689 1605 16.98      
4 A1 1427 1357 1.51      
5 A1 1387 1318 21.90      
6 A1 1278 1215 4.86      
7 A1 1050 998 1.02      
8 A1 927 881 13.84      
9 A2 1146 1089 0.00      
10 A2 902 857 0.00      
11 A2 536 510 0.00      
12 B1 3192 3034 0.45      
13 B1 1006 956 21.45      
14 B1 821 781 5.33      
15 B1 346 328 34.84      
16 B2 3274 3111 4.69      
17 B2 1754 1667 0.08      
18 B2 1406 1336 39.06      
19 B2 1239 1178 0.92      
20 B2 1093 1039 26.99      
21 B2 935 889 69.93      

Unscaled Zero Point Vibrational Energy (zpe) 15912.4 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 15123.2 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 MP2=FULL/cc-pVDZ
ABC
0.36073 0.29969 0.16907

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.209
N2 0.000 0.997 0.286
N3 0.000 -0.997 0.286
C4 0.000 0.730 -0.955
C5 0.000 -0.730 -0.955
H6 -0.901 0.000 1.840
H7 0.901 0.000 1.840
H8 0.000 1.490 -1.737
H9 0.000 -1.490 -1.737

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35851.35852.28342.28341.10021.10023.30133.3013
N21.35851.99401.26942.12642.05432.05432.08243.2061
N31.35851.99402.12641.26942.05432.05433.20612.0824
C42.28341.26942.12641.45943.02563.02561.09092.3537
C52.28342.12641.26941.45943.02563.02562.35371.0909
H61.10022.05432.05433.02563.02561.80293.97823.9782
H71.10022.05432.05433.02563.02561.80293.97823.9782
H83.30132.08243.20611.09092.35373.97823.97822.9804
H93.30133.20612.08242.35371.09093.97823.97822.9804

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 120.629 C1 N3 C5 120.629
N2 C1 N3 94.432 N2 C1 H6 112.920
N2 C1 H7 112.920 N2 C4 C5 102.155
N2 C4 H8 123.651 N3 C1 H6 112.920
N3 C1 H7 112.920 N3 C5 C4 102.155
N3 C5 H9 123.651 C4 C5 H9 134.194
C5 C4 H8 134.194 H6 C1 H7 110.031
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability