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

using model chemistry: MP2/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 MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-225.599925
Energy at 298.15K-225.605881
HF Energy-224.844122
Nuclear repulsion energy161.832044
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 MP2/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' 3663 3513 70.91      
2 A' 3314 3179 0.69      
3 A' 3296 3161 0.73      
4 A' 3288 3153 2.14      
5 A' 1524 1462 4.21      
6 A' 1490 1429 24.73      
7 A' 1460 1400 13.94      
8 A' 1362 1306 5.78      
9 A' 1260 1208 0.57      
10 A' 1176 1128 3.13      
11 A' 1139 1092 3.22      
12 A' 1095 1050 24.98      
13 A' 1073 1029 25.41      
14 A' 927 889 1.72      
15 A' 887 850 5.76      
16 A" 836 802 11.43      
17 A" 781 749 54.61      
18 A" 713 683 28.55      
19 A" 675 647 0.08      
20 A" 641 614 22.35      
21 A" 551 529 73.64      

Unscaled Zero Point Vibrational Energy (zpe) 15573.9 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 14935.4 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 MP2/aug-cc-pVDZ
ABC
0.32101 0.30720 0.15698

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.110 0.000
C2 -1.100 0.287 0.000
C3 1.127 0.311 0.000
N4 -0.745 -1.000 0.000
C5 0.639 -0.993 0.000
H6 -0.013 2.123 0.000
H7 -2.117 0.671 0.000
H8 2.133 0.721 0.000
H9 1.212 -1.918 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37321.38162.23722.19821.01312.16232.16843.2615
C21.37322.22641.33512.15932.13311.08743.26163.1950
C31.38162.22642.28431.39192.14123.26381.08692.2299
N42.23721.33512.28431.38363.20722.16183.35282.1617
C52.19822.15931.39191.38363.18383.21942.27381.0879
H61.01312.13312.14123.20723.18382.55682.56374.2226
H72.16231.08743.26382.16183.21942.55684.25074.2173
H82.16843.26161.08693.35282.27382.56374.25072.7946
H93.26153.19502.22992.16171.08794.22264.21732.7946

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 111.384 N1 C2 H7 122.566
N1 C3 C5 104.853 N1 C3 H8 122.458
C2 N1 C3 107.834 C2 N1 H6 126.066
C2 N4 C5 105.153 C3 N1 H6 126.100
C3 C5 N4 110.776 C3 C5 H9 127.688
N4 C2 H7 126.050 N4 C5 H9 121.537
C5 C3 H8 132.688
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability