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

using model chemistry: MP4/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 MP4/cc-pVDZ
 hartrees
Energy at 0K-225.614671
Energy at 298.15K-225.620557
HF Energy-224.830990
Nuclear repulsion energy161.588148
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 MP4/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' 3667 3546        
2 A' 3293 3184        
3 A' 3265 3157        
4 A' 3262 3154        
5 A' 1541 1490        
6 A' 1507 1457        
7 A' 1458 1410        
8 A' 1359 1314        
9 A' 1263 1221        
10 A' 1162 1124        
11 A' 1136 1098        
12 A' 1087 1051        
13 A' 1069 1034        
14 A' 923 893        
15 A' 889 859        
16 A" 831 803        
17 A" 791 765        
18 A" 704 680        
19 A" 672 650        
20 A" 634 613        
21 A" 480 464        

Unscaled Zero Point Vibrational Energy (zpe) 15496.8 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 14983.8 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 MP4/cc-pVDZ
ABC
0.32110 0.30534 0.15651

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.115 0.000
C2 -1.095 0.284 0.000
C3 1.129 0.309 0.000
N4 -0.751 -1.002 0.000
C5 0.639 -0.991 0.000
H6 -0.013 2.130 0.000
H7 -2.117 0.671 0.000
H8 2.138 0.723 0.000
H9 1.214 -1.920 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37541.38722.24692.20161.01472.16322.17363.2693
C21.37542.22451.33132.15302.14041.09273.26313.1923
C31.38722.22452.29211.38962.14923.26611.09062.2309
N42.24691.33132.29211.39043.21822.16033.36492.1688
C52.20162.15301.38961.39043.18883.21902.27701.0922
H61.01472.14042.14923.21823.18882.56052.57004.2319
H72.16321.09273.26612.16033.21902.56054.25534.2204
H82.17363.26311.09063.36492.27702.57004.25532.8000
H93.26933.19232.23092.16881.09224.23194.22042.8000

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 112.211 N1 C2 H7 122.022
N1 C3 C5 104.906 N1 C3 H8 122.164
C2 N1 C3 107.261 C2 N1 H6 126.486
C2 N4 C5 104.543 C3 N1 H6 126.253
C3 C5 N4 111.080 C3 C5 H9 127.623
N4 C2 H7 125.767 N4 C5 H9 121.297
C5 C3 H8 132.930
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability