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

using model chemistry: BLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-265.427909
Energy at 298.15K-265.435435
HF Energy-265.427909
Nuclear repulsion energy222.617117
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 BLYP/6-31G*
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 3517 3489 17.21      
2 A 3204 3178 7.83      
3 A 3174 3149 9.18      
4 A 3077 3052 6.01      
5 A 2998 2974 26.40      
6 A 2958 2934 41.72      
7 A 1540 1528 29.60      
8 A 1492 1480 0.55      
9 A 1477 1465 6.47      
10 A 1460 1448 6.29      
11 A 1400 1389 1.09      
12 A 1395 1384 33.95      
13 A 1348 1337 1.81      
14 A 1237 1227 16.29      
15 A 1147 1138 3.95      
16 A 1104 1095 1.51      
17 A 1072 1063 18.68      
18 A 1044 1035 1.43      
19 A 980 972 11.19      
20 A 938 930 1.20      
21 A 897 889 3.47      
22 A 804 797 11.78      
23 A 686 681 23.44      
24 A 658 653 6.36      
25 A 657 651 1.44      
26 A 618 613 17.77      
27 A 468 464 66.29      
28 A 337 334 4.63      
29 A 240 238 5.29      
30 A 79 78 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 21003.5 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 20833.4 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 BLYP/6-31G*
ABC
0.29095 0.11779 0.08520

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.133 -0.025 0.000
H2 2.532 0.490 0.891
H3 2.514 -1.055 -0.001
H4 2.532 0.492 -0.890
N5 -0.167 1.063 0.000
H6 0.159 2.027 -0.001
C7 0.624 -0.073 -0.000
N8 -0.122 -1.171 -0.000
C9 -1.445 -0.734 -0.000
H10 -2.274 -1.440 0.000
C11 -1.499 0.647 -0.000
H12 -2.325 1.353 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.10421.09781.10422.54462.84781.50992.52973.64804.62903.69394.6665
H21.10421.78461.78132.89912.96452.17993.25554.25575.25554.13125.0127
H31.09781.78461.78463.41663.87882.12962.63903.97234.80384.35895.4052
H41.10421.78131.78462.89842.96252.18003.25634.25615.25614.13095.0123
N52.54462.89913.41662.89841.01731.38472.23422.20563.27241.39592.1776
H62.84782.96453.87882.96251.01732.15143.20993.19324.23582.15742.5735
C71.50992.17992.12962.18001.38472.15141.32702.17223.20442.24193.2761
N82.52973.25552.63903.25632.23423.20991.32701.39302.16872.27973.3499
C93.64804.25573.97234.25612.20563.19322.17221.39301.08901.38162.2652
H104.62905.25554.80385.25613.27244.23583.20442.16871.08902.22612.7941
C113.69394.13124.35894.13091.39592.15742.24192.27971.38162.22611.0871
H124.66655.01275.40525.01232.17762.57353.27613.34992.26522.79411.0871

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 123.000 C1 C7 N8 126.059
H2 C1 H3 108.281 H2 C1 H4 107.534
H2 C1 C7 112.071 H3 C1 H4 108.282
H3 C1 C7 108.471 H4 C1 C7 112.073
N5 C7 N8 110.941 N5 C11 C9 105.137
N5 C11 H12 122.070 H6 N5 C7 126.505
H6 N5 C11 126.036 C7 N5 C11 107.459
C7 N8 C9 105.968 N8 C9 H10 121.309
N8 C9 C11 110.495 C9 C11 H12 132.793
H10 C9 C11 128.197
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.498      
2 H 0.145      
3 H 0.176      
4 H 0.145      
5 N -0.539      
6 H 0.301      
7 C 0.467      
8 N -0.441      
9 C -0.016      
10 H 0.103      
11 C 0.037      
12 H 0.118      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.484 3.462 -0.001 3.495
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.805 0.475 -0.000
y 0.475 -33.653 -0.002
z -0.000 -0.002 -37.266
Traceless
 xyz
x 4.654 0.475 -0.000
y 0.475 0.383 -0.002
z -0.000 -0.002 -5.038
Polar
3z2-r2-10.075
x2-y22.848
xy0.475
xz-0.000
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.354 0.129 0.000
y 0.129 8.219 -0.000
z 0.000 -0.000 4.081


<r2> (average value of r2) Å2
<r2> 141.280
(<r2>)1/2 11.886