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

using model chemistry: MP4/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/cc-pVDZ
 hartrees
Energy at 0K-225.510311
Energy at 298.15K-225.516259
HF Energy-224.738572
Nuclear repulsion energy165.322288
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/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 3248 3141        
2 A1 3093 2991        
3 A1 1691 1635        
4 A1 1424 1377        
5 A1 1386 1340        
6 A1 1264 1222        
7 A1 1029 995        
8 A1 910 879        
9 A2 1142 1105        
10 A2 879 850        
11 A2 527 510        
12 B1 3150 3046        
13 B1 1007 974        
14 B1 807 780        
15 B1 338 327        
16 B2 3233 3126        
17 B2 1743 1686        
18 B2 1402 1355        
19 B2 1230 1189        
20 B2 1083 1047        
21 B2 927 896        

Unscaled Zero Point Vibrational Energy (zpe) 15755.7 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 15234.2 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 MP4/cc-pVDZ
ABC
0.35839 0.29739 0.16787

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.215
N2 0.000 0.998 0.286
N3 0.000 -0.998 0.286
C4 0.000 0.735 -0.958
C5 0.000 -0.735 -0.958
H6 -0.905 0.000 1.848
H7 0.905 0.000 1.848
H8 0.000 1.501 -1.741
H9 0.000 -1.501 -1.741

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36341.36342.29452.29451.10381.10383.31533.3153
N21.36341.99501.27132.13322.06232.06232.08833.2170
N31.36341.99502.13321.27132.06232.06233.21702.0883
C42.29451.27132.13321.47093.03863.03861.09472.3692
C52.29452.13321.27131.47093.03863.03862.36921.0947
H61.10382.06232.06233.03863.03861.80913.99373.9937
H71.10382.06232.06233.03863.03861.80913.99373.9937
H83.31532.08833.21701.09472.36923.99373.99373.0014
H93.31533.21702.08832.36921.09473.99373.99373.0014

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 121.081 C1 N3 C5 121.081
N2 C1 N3 94.046 N2 C1 H6 112.998
N2 C1 H7 112.998 N2 C4 C5 101.896
N2 C4 H8 123.752 N3 C1 H6 112.998
N3 C1 H7 112.998 N3 C5 C4 101.896
N3 C5 H9 123.752 C4 C5 H9 134.352
C5 C4 H8 134.352 H6 C1 H7 110.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability