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

using model chemistry: MP4/aug-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 MP4/aug-cc-pVDZ
 hartrees
Energy at 0K-225.557683
Energy at 298.15K-225.563606
HF Energy-224.751751
Nuclear repulsion energy165.029678
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 MP4/6-31G*
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 3252 3177        
2 A1 3085 3014        
3 A1 1699 1660        
4 A1 1466 1432        
5 A1 1410 1378        
6 A1 1271 1242        
7 A1 1047 1023        
8 A1 932 911        
9 A2 1156 1129        
10 A2 849 829        
11 A2 530 518        
12 B1 3134 3062        
13 B1 1029 1005        
14 B1 802 783        
15 B1 349 341        
16 B2 3238 3163        
17 B2 1755 1714        
18 B2 1412 1379        
19 B2 1253 1224        
20 B2 1092 1067        
21 B2 936 914        

Unscaled Zero Point Vibrational Energy (zpe) 15847.4 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 15481.4 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 MP4/aug-cc-pVDZ
ABC
0.35820 0.29556 0.16726

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.220
N2 0.000 0.998 0.287
N3 0.000 -0.998 0.287
C4 0.000 0.736 -0.962
C5 0.000 -0.736 -0.962
H6 -0.907 0.000 1.849
H7 0.907 0.000 1.849
H8 0.000 1.500 -1.743
H9 0.000 -1.500 -1.743

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36631.36632.30262.30261.10331.10333.32103.3210
N21.36631.99561.27582.13632.06332.06332.09083.2184
N31.36631.99562.13631.27582.06332.06333.21842.0908
C42.30261.27582.13631.47133.04343.04341.09282.3681
C52.30262.13631.27581.47133.04343.04342.36811.0928
H61.10332.06332.06333.04343.04341.81343.99643.9964
H71.10332.06332.06333.04343.04341.81343.99643.9964
H83.32102.09083.21841.09282.36813.99643.99642.9999
H93.32103.21842.09082.36811.09283.99643.99642.9999

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 121.233 C1 N3 C5 121.233
N2 C1 N3 93.820 N2 C1 H6 112.905
N2 C1 H7 112.905 N2 C4 C5 101.857
N2 C4 H8 123.762 N3 C1 H6 112.905
N3 C1 H7 112.905 N3 C5 C4 101.857
N3 C5 H9 123.762 C4 C5 H9 134.381
C5 C4 H8 134.381 H6 C1 H7 110.539
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability