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

using model chemistry: B2PLYP=FULL/aug-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 B2PLYP=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-226.148080
Energy at 298.15K-226.154110
HF Energy-225.828413
Nuclear repulsion energy163.622979
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=FULL/aug-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' 3672 3523 61.08      
2 A' 3298 3165 0.85      
3 A' 3272 3140 0.66      
4 A' 3270 3137 3.19      
5 A' 1555 1491 8.85      
6 A' 1505 1444 19.30      
7 A' 1436 1378 16.12      
8 A' 1367 1311 6.36      
9 A' 1287 1235 0.42      
10 A' 1164 1117 4.85      
11 A' 1149 1103 3.04      
12 A' 1099 1054 17.04      
13 A' 1078 1035 36.88      
14 A' 946 907 1.49      
15 A' 906 869 6.94      
16 A" 889 853 3.68      
17 A" 834 800 36.28      
18 A" 755 724 38.18      
19 A" 685 658 3.43      
20 A" 651 625 11.92      
21 A" 554 532 91.37      

Unscaled Zero Point Vibrational Energy (zpe) 15686.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 15049.6 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 B2PLYP=FULL/aug-cc-pVTZ
ABC
0.32663 0.31545 0.16047

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.103 0.000
C2 -1.088 0.284 0.000
C3 1.116 0.295 0.000
N4 -0.742 -0.978 0.000
C5 0.636 -0.984 0.000
H6 -0.010 2.106 0.000
H7 -2.094 0.664 0.000
H8 2.112 0.694 0.000
H9 1.195 -1.902 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36151.37772.20912.18191.00322.13942.15123.2337
C21.36152.20361.30812.13992.11731.07613.22593.1601
C31.37772.20362.25221.36632.13223.23131.07302.1985
N42.20911.30812.25221.37823.16972.12743.30772.1458
C52.18192.13991.36631.37823.15703.18952.23491.0744
H61.00322.11732.13223.16973.15702.53442.54844.1851
H72.13941.07613.23132.12743.18952.53444.20624.1717
H82.15123.22591.07303.30772.23492.54844.20622.7535
H93.23373.16012.19852.14581.07444.18514.17172.7535

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 111.665 N1 C2 H7 122.285
N1 C3 C5 105.340 N1 C3 H8 122.265
C2 N1 C3 107.115 C2 N1 H6 126.445
C2 N4 C5 105.585 C3 N1 H6 126.440
C3 C5 N4 110.295 C3 C5 H9 128.125
N4 C2 H7 126.049 N4 C5 H9 121.581
C5 C3 H8 132.395
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability