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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: CCSD(T)=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-225.812948
Energy at 298.15K-225.818980
HF Energy-224.804504
Nuclear repulsion energy166.990833
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/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 A1 3260 3123        
2 A1 3103 2973        
3 A1 1701 1630        
4 A1 1437 1377        
5 A1 1409 1350        
6 A1 1264 1211        
7 A1 1042 998        
8 A1 937 898        
9 A2 1172 1122        
10 A2 927 888        
11 A2 541 518        
12 B1 3138 3006        
13 B1 1027 983        
14 B1 833 798        
15 B1 361 346        
16 B2 3242 3106        
17 B2 1762 1688        
18 B2 1410 1351        
19 B2 1262 1209        
20 B2 1091 1045        
21 B2 938 898        

Unscaled Zero Point Vibrational Energy (zpe) 15928.2 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 15259.2 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/cc-pVTZ
ABC
0.36335 0.30501 0.17122

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.202
N2 0.000 0.997 0.281
N3 0.000 -0.997 0.281
C4 0.000 0.725 -0.945
C5 0.000 -0.725 -0.945
H6 -0.892 0.000 1.822
H7 0.892 0.000 1.822
H8 0.000 1.466 -1.724
H9 0.000 -1.466 -1.724

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35681.35682.26602.26601.08701.08703.27243.2724
N21.35681.99371.25602.11422.04092.04092.05933.1760
N31.35681.99372.11421.25602.04092.04093.17602.0593
C42.26601.25602.11421.45082.99702.99701.07492.3259
C52.26602.11421.25601.45082.99702.99702.32591.0749
H61.08702.04092.04092.99702.99701.78443.93993.9399
H71.08702.04092.04092.99702.99701.78443.93993.9399
H83.27242.05933.17601.07492.32593.93993.93992.9324
H93.27243.17602.05932.32591.07493.93993.93992.9324

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 120.238 C1 N3 C5 120.238
N2 C1 N3 94.562 N2 C1 H6 112.798
N2 C1 H7 112.798 N2 C4 C5 102.481
N2 C4 H8 123.952 N3 C1 H6 112.798
N3 C1 H7 112.798 N3 C5 C4 102.481
N3 C5 H9 123.952 C4 C5 H9 133.568
C5 C4 H8 133.568 H6 C1 H7 110.335
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability