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

using model chemistry: LSDA/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/STO-3G
 hartrees
Energy at 0K-260.734730
Energy at 298.15K-260.742063
Nuclear repulsion energy220.626386
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 LSDA/STO-3G
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 3715 3327 42.72      
2 A 3505 3139 23.73      
3 A 3473 3110 2.53      
4 A 3473 3110 21.15      
5 A 3431 3073 0.30      
6 A 3285 2942 0.18      
7 A 1634 1463 26.45      
8 A 1627 1457 10.99      
9 A 1618 1449 11.05      
10 A 1586 1420 4.48      
11 A 1513 1355 0.06      
12 A 1486 1330 13.80      
13 A 1465 1312 1.74      
14 A 1306 1169 25.36      
15 A 1192 1068 0.35      
16 A 1155 1035 7.99      
17 A 1115 999 7.86      
18 A 1114 998 9.16      
19 A 1029 921 1.21      
20 A 980 878 3.54      
21 A 920 824 1.41      
22 A 884 792 2.24      
23 A 752 673 23.08      
24 A 687 616 1.21      
25 A 655 586 1.02      
26 A 638 571 15.40      
27 A 520 466 72.69      
28 A 328 293 3.71      
29 A 248 222 3.77      
30 A 103 92 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 22718.6 cm-1
Scaled (by 0.8955) Zero Point Vibrational Energy (zpe) 20344.5 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 LSDA/STO-3G
ABC
0.28278 0.11671 0.08394

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.140 -0.016 -0.000
H2 2.524 0.503 0.895
H3 2.525 -1.046 -0.001
H4 2.524 0.505 -0.894
N5 -0.168 1.072 0.000
H6 0.163 2.066 -0.001
C7 0.636 -0.078 -0.000
N8 -0.121 -1.213 0.000
C9 -1.453 -0.725 0.000
H10 -2.301 -1.419 0.000
C11 -1.504 0.653 -0.000
H12 -2.330 1.370 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.10351.10001.10352.55122.87101.50502.55753.66154.65683.70414.6799
H21.10351.78931.78862.89342.97012.16893.27714.25725.27034.12875.0119
H31.10001.78931.78933.42653.90732.12302.65103.99084.84054.37255.4236
H41.10351.78861.78932.89292.96862.16893.27774.25755.27084.12845.0115
N52.55122.89343.42652.89291.04731.40322.28582.20953.28001.40002.1829
H62.87102.97013.90732.96861.04732.19553.29133.22504.26822.18482.5883
C71.50502.16892.12302.16891.40322.19551.36402.18653.22852.26093.3008
N82.55753.27712.65103.27772.28583.29131.36401.41862.19002.32273.3995
C93.66154.25723.99084.25752.20953.22502.18651.41861.09601.37922.2719
H104.65685.27034.84055.27083.28004.26823.22852.19001.09602.22052.7898
C113.70414.12874.37254.12841.40002.18482.26092.32271.37922.22051.0945
H124.67995.01195.42365.01152.18292.58833.30083.39952.27192.78981.0945

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 122.584 C1 C7 N8 126.035
H2 C1 H3 108.590 H2 C1 H4 108.268
H2 C1 C7 111.570 H3 C1 H4 108.592
H3 C1 C7 108.168 H4 C1 C7 111.571
N5 C7 N8 111.381 N5 C11 C9 105.309
N5 C11 H12 121.629 H6 N5 C7 126.655
H6 N5 C11 125.830 C7 N5 C11 107.515
C7 N8 C9 103.566 N8 C9 H10 120.593
N8 C9 C11 112.230 C9 C11 H12 133.062
H10 C9 C11 127.177
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.289      
2 H 0.106      
3 H 0.125      
4 H 0.106      
5 N -0.251      
6 H 0.241      
7 C 0.125      
8 N -0.242      
9 C -0.072      
10 H 0.103      
11 C -0.060      
12 H 0.110      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.579 3.592 -0.001 3.639
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.606 0.359 -0.000
y 0.359 -31.108 -0.002
z -0.000 -0.002 -34.167
Traceless
 xyz
x 4.032 0.359 -0.000
y 0.359 0.278 -0.002
z -0.000 -0.002 -4.310
Polar
3z2-r2-8.621
x2-y22.502
xy0.359
xz-0.000
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.385 0.208 0.000
y 0.208 4.966 -0.000
z 0.000 -0.000 1.561


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000