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All results from a given calculation for C4H6N2 (1H-Imidazole, 2-methyl-)

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-265.012205
Energy at 298.15K-265.019900
HF Energy-263.959271
Nuclear repulsion energy225.241006
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/Def2TZVPP
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 3682 3503 65.27      
2 A 3317 3156 1.15      
3 A 3291 3132 2.76      
4 A 3200 3045 1.89      
5 A 3149 2996 11.34      
6 A 3078 2929 24.82      
7 A 1581 1505 27.09      
8 A 1525 1451 1.60      
9 A 1506 1433 4.71      
10 A 1499 1426 7.61      
11 A 1455 1384 41.19      
12 A 1425 1356 0.60      
13 A 1402 1334 0.27      
14 A 1290 1227 13.27      
15 A 1199 1141 2.73      
16 A 1133 1078 7.38      
17 A 1114 1060 20.45      
18 A 1067 1016 0.27      
19 A 1002 954 9.50      
20 A 970 923 1.43      
21 A 923 878 3.00      
22 A 848 806 13.40      
23 A 728 693 50.37      
24 A 688 654 0.81      
25 A 683 650 0.78      
26 A 648 616 16.98      
27 A 539 513 60.62      
28 A 345 328 5.15      
29 A 249 237 5.72      
30 A 41 39 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 21787.5 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 20730.8 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 MP2/Def2TZVPP
ABC
0.29725 0.12070 0.08724

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.107 -0.024 0.000
H2 2.494 0.484 0.883
H3 2.477 -1.045 -0.001
H4 2.494 0.486 -0.882
N5 -0.164 1.047 -0.000
H6 0.162 1.998 -0.001
C7 0.621 -0.070 -0.000
N8 -0.124 -1.163 -0.000
C9 -1.428 -0.726 -0.000
H10 -2.252 -1.417 0.000
C11 -1.477 0.646 0.000
H12 -2.292 1.347 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.08961.08571.08962.51082.80561.48662.50503.60364.57583.64644.6073
H21.08961.76591.76482.85672.91732.14343.21654.19795.18784.07144.9422
H31.08571.76591.76593.36893.82312.09632.60373.91734.74304.30055.3346
H41.08961.76481.76592.85612.91582.14343.21724.19825.18844.07134.9419
N52.51082.85673.36892.85611.00501.36512.21042.17763.22991.37332.1488
H62.80562.91733.82312.91581.00502.11803.17373.15404.18202.12482.5385
C71.48662.14342.09632.14341.36512.11801.32302.15123.17302.21713.2389
N82.50503.21652.60373.21722.21043.17371.32301.37462.14252.25913.3161
C93.60364.19793.91734.19822.17763.15402.15121.37461.07541.37322.2459
H104.57585.18784.74305.18843.22994.18203.17302.14251.07542.20392.7645
C113.64644.07144.30054.07131.37332.12482.21712.25911.37322.20391.0743
H124.60734.94225.33464.94192.14882.53853.23893.31612.24592.76451.0743

picture of 1H-Imidazole, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C7 N5 123.335 C1 C7 N8 126.046
H2 C1 H3 108.546 H2 C1 H4 108.154
H2 C1 C7 111.675 H3 C1 H4 108.547
H3 C1 C7 108.154 H4 C1 C7 111.676
N5 C7 N8 110.619 N5 C11 C9 104.903
N5 C11 H12 122.307 H6 N5 C7 125.984
H6 N5 C11 125.898 C7 N5 C11 108.117
C7 N8 C9 105.763 N8 C9 H10 121.490
N8 C9 C11 110.598 C9 C11 H12 132.791
H10 C9 C11 127.912
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability