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

using model chemistry: MP3/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 MP3/cc-pVDZ
 hartrees
Energy at 0K-225.574028
Energy at 298.15K-225.580015
HF Energy-224.833571
Nuclear repulsion energy162.482595
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 MP3/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' 3746 3551 79.26      
2 A' 3340 3166 1.18      
3 A' 3312 3139 0.64      
4 A' 3308 3136 4.96      
5 A' 1603 1520 11.89      
6 A' 1556 1475 21.14      
7 A' 1502 1424 15.02      
8 A' 1401 1328 6.56      
9 A' 1297 1230 0.80      
10 A' 1191 1129 7.38      
11 A' 1163 1103 1.57      
12 A' 1113 1055 18.91      
13 A' 1094 1037 31.01      
14 A' 950 900 1.93      
15 A' 915 868 6.72      
16 A" 868 823 2.81      
17 A" 832 789 34.07      
18 A" 739 700 33.28      
19 A" 686 650 2.43      
20 A" 648 614 14.10      
21 A" 499 473 88.34      

Unscaled Zero Point Vibrational Energy (zpe) 15880.5 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 15053.1 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 MP3/cc-pVDZ
ABC
0.32399 0.30938 0.15826

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.114 0.000
C2 -1.089 0.281 0.000
C3 1.123 0.305 0.000
N4 -0.750 -0.993 0.000
C5 0.638 -0.990 0.000
H6 -0.015 2.124 0.000
H7 -2.109 0.666 0.000
H8 2.133 0.711 0.000
H9 1.207 -1.919 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37091.38422.23592.19851.01002.15642.17083.2645
C21.37092.21231.31752.14372.13321.09103.25063.1799
C31.38422.21232.27921.38352.14543.25301.08852.2260
N42.23591.31752.27921.38783.20192.14443.34932.1658
C52.19852.14371.38351.38783.18153.20772.26561.0898
H61.01002.13322.14543.20193.18152.55202.57054.2236
H72.15641.09103.25302.14443.20772.55204.24294.2054
H82.17083.25061.08853.34932.26562.57054.24292.7889
H93.26453.17992.22602.16581.08984.22364.20542.7889

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 112.532 N1 C2 H7 121.892
N1 C3 C5 105.185 N1 C3 H8 122.332
C2 N1 C3 106.832 C2 N1 H6 126.594
C2 N4 C5 104.795 C3 N1 H6 126.574
C3 C5 N4 110.655 C3 C5 H9 127.919
N4 C2 H7 125.575 N4 C5 H9 121.427
C5 C3 H8 132.483
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability