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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-265.577616
Energy at 298.15K-265.585345
HF Energy-265.577616
Nuclear repulsion energy224.776057
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 TPSSh/6-31G(2df,p)
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 3646 3519 34.59      
2 A 3278 3163 5.73      
3 A 3246 3133 6.82      
4 A 3150 3040 5.32      
5 A 3077 2969 22.24      
6 A 3025 2919 37.01      
7 A 1590 1534 33.30      
8 A 1523 1470 2.65      
9 A 1498 1446 3.32      
10 A 1496 1444 5.45      
11 A 1443 1392 36.55      
12 A 1416 1367 0.83      
13 A 1387 1339 1.51      
14 A 1271 1227 13.32      
15 A 1185 1144 3.52      
16 A 1137 1097 1.50      
17 A 1104 1065 23.24      
18 A 1059 1022 0.82      
19 A 1001 966 10.67      
20 A 963 929 1.00      
21 A 916 884 3.63      
22 A 849 819 11.91      
23 A 727 702 33.01      
24 A 686 662 2.16      
25 A 674 650 1.43      
26 A 639 616 16.50      
27 A 523 505 59.36      
28 A 336 325 4.75      
29 A 251 242 4.94      
30 A 81 78 0.27      

Unscaled Zero Point Vibrational Energy (zpe) 21588.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 20833.1 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 TPSSh/6-31G(2df,p)
ABC
0.29690 0.12000 0.08685

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.111 -0.022 0.000
H2 2.505 0.490 0.886
H3 2.486 -1.047 -0.001
H4 2.505 0.492 -0.885
N5 -0.168 1.051 0.000
H6 0.153 2.007 -0.000
C7 0.619 -0.070 -0.000
N8 -0.119 -1.163 -0.000
C9 -1.427 -0.728 0.000
H10 -2.248 -1.428 0.000
C11 -1.485 0.640 -0.000
H12 -2.302 1.343 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.09651.09081.09652.51972.82001.49302.50503.60764.58073.65684.6195
H21.09651.77461.77062.87102.93522.15733.22514.20995.20154.08954.9611
H31.09081.77461.77463.38363.84292.10762.60803.92614.75034.31485.3515
H41.09651.77061.77462.87042.93372.15733.22584.21035.20214.08924.9606
N52.51972.87103.38362.87041.00741.36992.21502.17933.23661.37972.1534
H62.82002.93523.84292.93371.00742.12793.18113.15754.19062.13292.5423
C71.49302.15732.10762.15731.36992.12791.31902.14893.17292.22053.2446
N82.50503.22512.60803.22582.21503.18111.31901.37832.14602.26213.3237
C93.60764.20993.92614.21032.17933.15752.14891.37831.07971.36892.2484
H104.58075.20154.75035.20213.23664.19063.17292.14601.07972.20442.7720
C113.65684.08954.31484.08921.37972.13292.22052.26211.36892.20441.0779
H124.61954.96115.35154.96062.15342.54233.24463.32372.24842.77201.0779

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 123.253 C1 C7 N8 125.834
H2 C1 H3 108.452 H2 C1 H4 107.683
H2 C1 C7 111.923 H3 C1 H4 108.453
H3 C1 C7 108.301 H4 C1 C7 111.924
N5 C7 N8 110.913 N5 C11 C9 104.909
N5 C11 H12 121.902 H6 N5 C7 126.365
H6 N5 C11 125.917 C7 N5 C11 107.718
C7 N8 C9 105.605 N8 C9 H10 121.150
N8 C9 C11 110.854 C9 C11 H12 133.188
H10 C9 C11 127.995
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability