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

using model chemistry: B2PLYP/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-226.037084
Energy at 298.15K-226.043063
HF Energy-225.761254
Nuclear repulsion energy163.338045
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/6-31G(2df,p)
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' 3698 3531 59.92      
2 A' 3312 3163 1.34      
3 A' 3284 3136 0.26      
4 A' 3282 3134 4.93      
5 A' 1560 1490 12.14      
6 A' 1514 1446 15.29      
7 A' 1447 1381 16.38      
8 A' 1373 1311 7.89      
9 A' 1291 1233 0.51      
10 A' 1169 1117 4.76      
11 A' 1159 1107 2.27      
12 A' 1108 1058 15.73      
13 A' 1085 1036 32.88      
14 A' 944 902 1.31      
15 A' 905 864 9.19      
16 A" 862 824 6.00      
17 A" 818 781 28.45      
18 A" 732 699 21.45      
19 A" 688 657 2.13      
20 A" 650 620 14.91      
21 A" 528 504 84.22      

Unscaled Zero Point Vibrational Energy (zpe) 15703.7 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 14997.1 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/6-31G(2df,p)
ABC
0.32635 0.31356 0.15991

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.103 0.000
C2 -1.088 0.282 0.000
C3 1.118 0.300 0.000
N4 -0.742 -0.986 0.000
C5 0.635 -0.982 0.000
H6 -0.009 2.108 0.000
H7 -2.096 0.665 0.000
H8 2.113 0.708 0.000
H9 1.197 -1.902 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36281.37672.21732.18011.00472.14102.14943.2345
C21.36282.20591.31482.13732.12031.07803.22903.1609
C31.37672.20592.26151.37012.13073.23441.07552.2028
N42.21731.31482.26151.37733.17972.13493.32022.1446
C52.18012.13731.37011.37733.15673.18912.24561.0775
H61.00472.12032.13073.17973.15672.53682.54204.1870
H72.14101.07803.23442.13493.18912.53684.20884.1749
H82.14943.22901.07553.32022.24562.54204.20882.7660
H93.23453.16092.20282.14461.07754.18704.17492.7660

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