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All results from a given calculation for C3H4N2 (1H-Imidazole)

using model chemistry: MP4=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4=FULL/cc-pVTZ
 hartrees
Energy at 0K-225.917306
Energy at 298.15K-225.923308
HF Energy-224.894380
Nuclear repulsion energy163.386476
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=FULL/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 A' 3690 3553        
2 A' 3305 3183        
3 A' 3277 3155        
4 A' 3272 3150        
5 A' 1549 1491        
6 A' 1511 1455        
7 A' 1450 1396        
8 A' 1366 1315        
9 A' 1286 1238        
10 A' 1165 1122        
11 A' 1153 1110        
12 A' 1099 1059        
13 A' 1082 1042        
14 A' 936 901        
15 A' 900 867        
16 A" 875 842        
17 A" 833 802        
18 A" 740 713        
19 A" 683 657        
20 A" 648 624        
21 A" 536 516        

Unscaled Zero Point Vibrational Energy (zpe) 15677.2 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 15095.6 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 MP4=FULL/cc-pVTZ
ABC
0.32694 0.31321 0.15996

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.104 0.000
C2 -1.087 0.283 0.000
C3 1.117 0.302 0.000
N4 -0.742 -0.989 0.000
C5 0.635 -0.982 0.000
H6 -0.011 2.107 0.000
H7 -2.091 0.662 0.000
H8 2.110 0.703 0.000
H9 1.200 -1.894 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36231.37512.22022.18031.00302.13722.14783.2289
C21.36232.20391.31702.13632.11781.07333.22453.1569
C31.37512.20392.26311.37112.12853.22801.07122.1971
N42.22021.31702.26311.37733.18062.13143.31632.1428
C52.18032.13631.37111.37733.15563.18322.23951.0727
H61.00302.11782.12853.18063.15562.53252.54364.1799
H72.13721.07333.22802.13143.18322.53254.20134.1667
H82.14783.22451.07123.31632.23952.54364.20132.7518
H93.22893.15692.19712.14281.07274.17994.16672.7518

picture of 1H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N4 111.907 N1 C2 H7 122.228
N1 C3 C5 105.109 N1 C3 H8 122.312
C2 N1 C3 107.239 C2 N1 H6 126.441
C2 N4 C5 104.891 C3 N1 H6 126.320
C3 C5 N4 110.854 C3 C5 H9 127.647
N4 C2 H7 125.865 N4 C5 H9 121.500
C5 C3 H8 132.579
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability