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

using model chemistry: B1B95/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-265.445325
Energy at 298.15K-265.453128
Nuclear repulsion energy225.386135
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/cc-pVDZ
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 3668 3526 49.97      
2 A 3301 3173 2.24      
3 A 3264 3137 6.26      
4 A 3184 3061 2.32      
5 A 3117 2996 15.41      
6 A 3051 2932 31.81      
7 A 1621 1558 36.65      
8 A 1545 1485 4.72      
9 A 1503 1444 14.26      
10 A 1451 1394 7.88      
11 A 1433 1378 22.12      
12 A 1426 1371 6.55      
13 A 1379 1326 1.49      
14 A 1282 1232 12.88      
15 A 1202 1155 2.05      
16 A 1135 1091 5.30      
17 A 1104 1061 26.81      
18 A 1042 1001 1.60      
19 A 1001 962 8.98      
20 A 960 923 0.82      
21 A 919 883 3.08      
22 A 863 830 7.45      
23 A 731 703 39.79      
24 A 694 667 1.96      
25 A 686 660 1.24      
26 A 646 621 14.30      
27 A 531 511 60.94      
28 A 345 331 4.76      
29 A 254 244 5.34      
30 A 95 91 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 21715.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 20872.9 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/cc-pVDZ
ABC
0.29781 0.12101 0.08747

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.102 -0.023 0.000
H2 2.498 0.490 0.890
H3 2.477 -1.051 -0.001
H4 2.498 0.492 -0.888
N5 -0.167 1.048 0.000
H6 0.157 2.004 -0.001
C7 0.617 -0.068 -0.000
N8 -0.119 -1.159 -0.000
C9 -1.420 -0.727 -0.000
H10 -2.249 -1.429 0.000
C11 -1.478 0.640 0.000
H12 -2.303 1.344 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.10031.09481.10032.50892.80911.48592.49473.59184.57273.64124.6121
H21.10031.77981.77782.86462.92702.15473.21854.19835.19714.07764.9571
H31.09481.77981.77983.37603.83642.10392.59803.91064.74124.30195.3466
H41.10031.77781.77982.86412.92542.15473.21924.19865.19764.07744.9568
N52.50892.86463.37602.86411.00961.36412.20782.17293.23581.37322.1565
H62.80912.92703.83642.92541.00962.12313.17563.15404.19242.12942.5472
C71.48592.15472.10392.15471.36412.12311.31562.14083.17242.21183.2435
N82.49473.21852.59803.21922.20783.17561.31561.37132.14742.25563.3222
C93.59184.19833.91064.19862.17293.15402.14081.37131.08621.36892.2513
H104.57275.19714.74125.19763.23584.19243.17242.14741.08622.20832.7733
C113.64124.07764.30194.07741.37322.12942.21182.25561.36892.20831.0839
H124.61214.95715.34664.95682.15652.54723.24353.32222.25132.77331.0839

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 123.303 C1 C7 N8 125.757
H2 C1 H3 108.350 H2 C1 H4 107.778
H2 C1 C7 111.986 H3 C1 H4 108.352
H3 C1 C7 108.269 H4 C1 C7 111.988
N5 C7 N8 110.941 N5 C11 C9 104.826
N5 C11 H12 122.279 H6 N5 C7 126.213
H6 N5 C11 125.981 C7 N5 C11 107.806
C7 N8 C9 105.620 N8 C9 H10 121.379
N8 C9 C11 110.807 C9 C11 H12 132.895
H10 C9 C11 127.814
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.022      
2 H 0.047      
3 H 0.059      
4 H 0.047      
5 N -0.104      
6 H 0.093      
7 C 0.038      
8 N -0.240      
9 C 0.015      
10 H -0.012      
11 C 0.030      
12 H 0.004      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.602 3.502 -0.001 3.553
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.794 0.513 -0.000
y 0.513 -33.376 -0.002
z -0.000 -0.002 -37.320
Traceless
 xyz
x 4.554 0.513 -0.000
y 0.513 0.681 -0.002
z -0.000 -0.002 -5.235
Polar
3z2-r2-10.470
x2-y22.582
xy0.513
xz-0.000
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.299 0.094 0.000
y 0.094 8.094 -0.000
z 0.000 -0.000 4.411


<r2> (average value of r2) Å2
<r2> 138.227
(<r2>)1/2 11.757