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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-265.438770
Energy at 298.15K-265.446317
Nuclear repulsion energy222.696096
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 3541 3514 20.46      
2 A 3204 3179 6.26      
3 A 3173 3148 8.55      
4 A 3080 3056 5.55      
5 A 3003 2980 25.06      
6 A 2959 2936 40.73      
7 A 1536 1525 28.89      
8 A 1481 1470 1.91      
9 A 1462 1450 6.03      
10 A 1455 1444 4.87      
11 A 1392 1381 34.21      
12 A 1385 1374 1.40      
13 A 1345 1334 1.86      
14 A 1233 1223 16.30      
15 A 1145 1137 3.93      
16 A 1102 1094 1.14      
17 A 1068 1060 19.35      
18 A 1033 1025 1.31      
19 A 976 968 10.77      
20 A 934 927 1.13      
21 A 896 889 3.43      
22 A 810 804 10.14      
23 A 690 685 26.16      
24 A 660 655 3.92      
25 A 656 651 1.37      
26 A 619 614 16.18      
27 A 477 474 64.06      
28 A 337 334 4.70      
29 A 240 238 5.01      
30 A 76 75 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 20982.6 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 20821.1 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 BLYP/6-31G**
ABC
0.29112 0.11788 0.08526

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 2.130 -0.022 0.000
H2 2.531 0.492 0.891
H3 2.507 -1.052 -0.001
H4 2.531 0.494 -0.890
N5 -0.171 1.063 0.000
H6 0.148 2.028 -0.002
C7 0.627 -0.069 -0.000
N8 -0.119 -1.174 -0.000
C9 -1.439 -0.736 -0.000
H10 -2.267 -1.441 0.000
C11 -1.501 0.644 -0.000
H12 -2.326 1.351 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.10391.09761.10392.54402.85081.50312.52693.63934.62013.69124.6620
H21.10391.78381.78072.90182.97172.17533.25454.24955.24864.13165.0114
H31.09761.78381.78383.41323.87992.12142.62923.95874.79004.35255.3974
H41.10391.78071.78382.90132.96932.17533.25524.24995.24934.13145.0110
N52.54402.90183.41322.90131.01691.38572.23752.20033.26531.39372.1733
H62.85082.97173.87992.96931.01692.15153.21333.18734.22742.15282.5651
C71.50312.17532.12142.17531.38572.15151.33322.17103.20292.24483.2767
N82.52693.25452.62923.25522.23753.21331.33321.39052.16432.28393.3531
C93.63934.24953.95874.24992.20033.18732.17101.39051.08791.38172.2673
H104.62015.24864.79005.24933.26534.22743.20292.16431.08792.22212.7928
C113.69124.13164.35254.13141.39372.15282.24482.28391.38172.22211.0858
H124.66205.01145.39745.01102.17332.56513.27673.35312.26732.79281.0858

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 123.385 C1 C7 N8 125.868
H2 C1 H3 108.240 H2 C1 H4 107.520
H2 C1 C7 112.200 H3 C1 H4 108.240
H3 C1 C7 108.302 H4 C1 C7 112.201
N5 C7 N8 110.747 N5 C11 C9 104.894
N5 C11 H12 121.956 H6 N5 C7 126.461
H6 N5 C11 125.804 C7 N5 C11 107.734
C7 N8 C9 105.680 N8 C9 H10 121.197
N8 C9 C11 110.945 C9 C11 H12 133.150
H10 C9 C11 127.859
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 -0.355      
2 H 0.107      
3 H 0.136      
4 H 0.107      
5 N -0.470      
6 H 0.236      
7 C 0.436      
8 N -0.449      
9 C 0.037      
10 H 0.060      
11 C 0.080      
12 H 0.076      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.506 3.448 -0.002 3.485
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.771 0.484 -0.001
y 0.484 -33.717 -0.007
z -0.001 -0.007 -37.226
Traceless
 xyz
x 4.701 0.484 -0.001
y 0.484 0.281 -0.007
z -0.001 -0.007 -4.982
Polar
3z2-r2-9.965
x2-y22.946
xy0.484
xz-0.001
yz-0.007


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


<r2> (average value of r2) Å2
<r2> 141.182
(<r2>)1/2 11.882