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

using model chemistry: B2PLYP=FULLultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULLultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-226.031002
Energy at 298.15K 
HF Energy-225.775764
Nuclear repulsion energy162.519933
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 B2PLYP=FULLultrafine/aug-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 A' 3669 3530 60.50      
2 A' 3305 3181 0.84      
3 A' 3282 3158 0.79      
4 A' 3277 3153 3.04      
5 A' 1548 1489 7.77      
6 A' 1497 1441 20.23      
7 A' 1443 1389 14.67      
8 A' 1366 1314 5.78      
9 A' 1275 1227 0.34      
10 A' 1164 1121 3.77      
11 A' 1142 1099 3.51      
12 A' 1094 1053 19.24      
13 A' 1073 1033 35.53      
14 A' 938 903 1.59      
15 A' 900 866 6.60      
16 A" 861 829 5.52      
17 A" 814 783 40.81      
18 A" 731 703 40.67      
19 A" 678 653 2.70      
20 A" 644 619 13.68      
21 A" 543 523 86.14      

Unscaled Zero Point Vibrational Energy (zpe) 15621.2 cm-1
Scaled (by 0.9623) Zero Point Vibrational Energy (zpe) 15032.3 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 B2PLYP=FULLultrafine/aug-cc-pVDZ
ABC
0.32275 0.31079 0.15833

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.108 0.000
C2 -1.095 0.285 0.000
C3 1.123 0.303 0.000
N4 -0.744 -0.990 0.000
C5 0.638 -0.989 0.000
H6 -0.011 2.117 0.000
H7 -2.110 0.667 0.000
H8 2.127 0.709 0.000
H9 1.205 -1.913 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36921.38192.22572.19121.00932.15522.16423.2522
C21.36922.21791.32242.15042.12831.08423.24963.1812
C31.38192.21792.27101.37952.13973.25321.08312.2173
N42.22571.32242.27101.38203.19222.14663.33622.1567
C52.19122.15041.37951.38203.17273.20742.25831.0845
H61.00932.12832.13973.19223.17272.55102.56024.2095
H72.15521.08423.25322.14663.20742.55104.23694.2000
H82.16423.24961.08313.33622.25832.56024.23692.7795
H93.25223.18122.21732.15671.08454.20954.20002.7795

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 111.551 N1 C2 H7 122.488
N1 C3 C5 105.032 N1 C3 H8 122.336
C2 N1 C3 107.448 C2 N1 H6 126.291
C2 N4 C5 105.319 C3 N1 H6 126.262
C3 C5 N4 110.650 C3 C5 H9 127.873
N4 C2 H7 125.960 N4 C5 H9 121.477
C5 C3 H8 132.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability