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

using model chemistry: CCSD(T)=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-225.790539
Energy at 298.15K-225.795982
HF Energy-224.884065
Nuclear repulsion energy162.874700
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 CCSD(T)=FULL/TZVP
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' 3678 3516        
2 A' 3300 3155        
3 A' 3274 3130        
4 A' 3272 3128        
5 A' 1561 1493        
6 A' 1514 1447        
7 A' 1450 1387        
8 A' 1367 1307        
9 A' 1293 1236        
10 A' 1157 1106        
11 A' 1148 1098        
12 A' 1103 1054        
13 A' 1080 1033        
14 A' 940 899        
15 A' 906 866        
16 A" 751 718        
17 A" 718 687        
18 A" 658 629        
19 A" 629 602        
20 A" 547 523        
21 A" 204 195        

Unscaled Zero Point Vibrational Energy (zpe) 15275.8 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 14603.7 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 CCSD(T)=FULL/TZVP
ABC
0.32458 0.31159 0.15898

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.108 0.000
C2 -1.090 0.282 0.000
C3 1.121 0.300 0.000
N4 -0.747 -0.989 0.000
C5 0.638 -0.983 0.000
H6 -0.012 2.115 0.000
H7 -2.099 0.662 0.000
H8 2.120 0.704 0.000
H9 1.199 -1.904 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36761.38202.22612.18671.00722.14632.15803.2419
C21.36762.21131.31652.14182.12671.07873.23723.1651
C31.38202.21132.26981.37162.13973.24101.07682.2054
N42.22611.31652.26981.38493.19002.13443.32902.1504
C52.18672.14181.37161.38493.16613.19402.24531.0780
H61.00722.12672.13973.19003.16612.54352.55674.1975
H72.14631.07873.24102.13443.19402.54354.21944.1791
H82.15803.23721.07683.32902.24532.55674.21942.7651
H93.24193.16512.20542.15041.07804.19754.17912.7651

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 112.058 N1 C2 H7 122.206
N1 C3 C5 105.143 N1 C3 H8 122.230
C2 N1 C3 107.065 C2 N1 H6 126.485
C2 N4 C5 104.874 C3 N1 H6 126.450
C3 C5 N4 110.860 C3 C5 H9 128.000
N4 C2 H7 125.736 N4 C5 H9 121.140
C5 C3 H8 132.627
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability