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

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-265.479740
Energy at 298.15K-265.487543
Nuclear repulsion energy225.913595
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 B1B95/6-311G*
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 3685 3532 36.32      
2 A 3288 3152 6.40      
3 A 3256 3121 8.82      
4 A 3169 3038 5.69      
5 A 3101 2973 23.48      
6 A 3048 2921 35.98      
7 A 1624 1557 42.66      
8 A 1544 1480 4.58      
9 A 1515 1453 3.28      
10 A 1498 1436 9.26      
11 A 1459 1399 43.19      
12 A 1432 1373 0.75      
13 A 1405 1346 0.70      
14 A 1290 1237 14.43      
15 A 1205 1155 3.61      
16 A 1144 1097 5.20      
17 A 1116 1070 27.95      
18 A 1064 1020 1.39      
19 A 1012 970 9.22      
20 A 972 932 1.80      
21 A 927 889 3.13      
22 A 855 819 12.72      
23 A 723 693 44.95      
24 A 694 666 9.12      
25 A 685 656 1.17      
26 A 648 621 17.21      
27 A 543 521 75.08      
28 A 345 330 5.12      
29 A 253 243 6.05      
30 A 93 90 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 21796.2 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 20893.9 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 B1B95/6-311G*
ABC
0.29994 0.12126 0.08776

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.100 -0.023 0.000
H2 2.496 0.486 0.883
H3 2.476 -1.043 -0.001
H4 2.496 0.487 -0.882
N5 -0.167 1.046 0.000
H6 0.152 1.999 -0.001
C7 0.616 -0.069 -0.000
N8 -0.119 -1.154 -0.000
C9 -1.419 -0.725 -0.000
H10 -2.239 -1.426 0.000
C11 -1.477 0.637 0.000
H12 -2.297 1.336 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.09311.08741.09312.50682.80791.48522.49133.58894.56093.63794.6023
H21.09311.76611.76572.86102.92672.14983.21044.19185.18214.07274.9468
H31.08741.76611.76613.36923.82842.09962.59753.90814.73094.29555.3329
H41.09311.76571.76612.86052.92522.14983.21104.19215.18264.07254.9465
N52.50682.86103.36922.86051.00501.36282.20102.16883.22561.37232.1492
H62.80792.92673.82842.92521.00502.11983.16513.14454.17712.12342.5368
C71.48522.14982.09962.14981.36282.11981.31062.13803.16122.20913.2340
N82.49133.21042.59753.21102.20103.16511.31061.36912.13752.24813.3082
C93.58894.19183.90814.19212.16883.14452.13801.36911.07901.36332.2400
H104.56095.18214.73095.18263.22564.17713.16122.13751.07902.19942.7626
C113.63794.07274.29554.07251.37232.12342.20912.24811.36332.19941.0771
H124.60234.94685.33294.94652.14922.53683.23403.30822.24002.76261.0771

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 123.277 C1 C7 N8 125.908
H2 C1 H3 108.186 H2 C1 H4 107.736
H2 C1 C7 112.089 H3 C1 H4 108.187
H3 C1 C7 108.413 H4 C1 C7 112.092
N5 C7 N8 110.814 N5 C11 C9 104.896
N5 C11 H12 122.207 H6 N5 C7 126.417
H6 N5 C11 125.846 C7 N5 C11 107.736
C7 N8 C9 105.830 N8 C9 H10 121.196
N8 C9 C11 110.724 C9 C11 H12 132.897
H10 C9 C11 128.080
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.726      
2 H 0.231      
3 H 0.259      
4 H 0.231      
5 N -0.565      
6 H 0.353      
7 C 0.398      
8 N -0.328      
9 C -0.202      
10 H 0.198      
11 C -0.064      
12 H 0.216      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.510 3.613 -0.001 3.649
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.646 0.536 -0.001
y 0.536 -33.593 -0.002
z -0.001 -0.002 -37.824
Traceless
 xyz
x 5.063 0.536 -0.001
y 0.536 0.641 -0.002
z -0.001 -0.002 -5.704
Polar
3z2-r2-11.408
x2-y22.948
xy0.536
xz-0.001
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.207 0.089 0.000
y 0.089 8.210 0.000
z 0.000 0.000 4.730


<r2> (average value of r2) Å2
<r2> 137.862
(<r2>)1/2 11.741