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

using model chemistry: CCSD(T)=FULL/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 CCSD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-225.669475
Energy at 298.15K-225.675374
HF Energy-224.844019
Nuclear repulsion energy161.547567
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/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' 3662 3556        
2 A' 3287 3192        
3 A' 3263 3169        
4 A' 3258 3165        
5 A' 1542 1498        
6 A' 1495 1452        
7 A' 1444 1402        
8 A' 1353 1314        
9 A' 1261 1225        
10 A' 1143 1110        
11 A' 1134 1102        
12 A' 1087 1056        
13 A' 1062 1032        
14 A' 925 899        
15 A' 888 863        
16 A" 832 808        
17 A" 800 777        
18 A" 708 688        
19 A" 662 643        
20 A" 625 607        
21 A" 498 483        

Unscaled Zero Point Vibrational Energy (zpe) 15464.5 cm-1
Scaled (by 0.9712) Zero Point Vibrational Energy (zpe) 15019.2 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/aug-cc-pVDZ
ABC
0.31931 0.30655 0.15640

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.115 0.000
C2 -1.099 0.286 0.000
C3 1.131 0.306 0.000
N4 -0.752 -0.998 0.000
C5 0.642 -0.993 0.000
H6 -0.014 2.127 0.000
H7 -2.118 0.671 0.000
H8 2.139 0.714 0.000
H9 1.212 -1.922 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37631.39032.24212.20381.01212.16452.17653.2697
C21.37632.22961.32992.16082.13661.08943.26643.1964
C31.39032.22962.28941.38772.15103.26941.08832.2289
N42.24211.32992.28941.39403.21032.15643.35982.1706
C52.20382.16081.38771.39403.18843.22332.27091.0895
H61.01212.13662.15103.21033.18842.55922.57534.2303
H72.16451.08943.26942.15643.22332.55924.25794.2206
H82.17653.26641.08833.35982.27092.57534.25792.7943
H93.26973.19642.22892.17061.08954.23034.22062.7943

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 111.882 N1 C2 H7 122.328
N1 C3 C5 104.989 N1 C3 H8 122.359
C2 N1 C3 107.392 C2 N1 H6 126.225
C2 N4 C5 104.962 C3 N1 H6 126.382
C3 C5 N4 110.775 C3 C5 H9 127.851
N4 C2 H7 125.790 N4 C5 H9 121.374
C5 C3 H8 132.652
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability