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

using model chemistry: HF/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-311+G(3df,2p)
 hartrees
Energy at 0K-263.950833
Energy at 298.15K-263.958924
Nuclear repulsion energy227.391639
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 HF/6-311+G(3df,2p)
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 3913 3555 80.37      
2 A 3426 3112 3.18      
3 A 3396 3085 5.37      
4 A 3277 2977 7.42      
5 A 3210 2916 23.72      
6 A 3164 2875 30.02      
7 A 1759 1598 59.77      
8 A 1657 1506 14.32      
9 A 1623 1475 12.83      
10 A 1603 1457 6.84      
11 A 1574 1431 46.00      
12 A 1541 1400 1.38      
13 A 1496 1359 3.21      
14 A 1374 1249 15.24      
15 A 1247 1133 15.38      
16 A 1230 1118 0.93      
17 A 1167 1060 29.88      
18 A 1162 1056 0.88      
19 A 1093 993 10.17      
20 A 1049 954 5.88      
21 A 1001 910 1.54      
22 A 1000 909 4.93      
23 A 835 759 67.01      
24 A 756 687 10.21      
25 A 718 652 1.21      
26 A 690 627 7.03      
27 A 537 488 84.16      
28 A 375 341 5.87      
29 A 281 255 9.32      
30 A 78 71 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 23116.0 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 21003.2 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 HF/6-311+G(3df,2p)
ABC
0.30688 0.12195 0.08870

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.098 -0.026 0.000
H2 2.473 0.487 0.878
H3 2.477 -1.036 -0.001
H4 2.473 0.489 -0.877
N5 -0.162 1.038 0.000
H6 0.162 1.973 -0.001
C7 0.606 -0.072 -0.000
N8 -0.115 -1.139 0.000
C9 -1.419 -0.715 0.000
H10 -2.233 -1.407 0.000
C11 -1.472 0.628 -0.000
H12 -2.289 1.314 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.08421.07861.08422.49752.78241.49222.47653.58394.54533.62914.5865
H21.08421.75811.75512.83192.88502.13793.18024.16785.14854.04474.9127
H31.07861.75811.75813.35633.79622.10482.59393.90984.72464.28535.3137
H41.08421.75511.75812.83132.88302.13793.18104.16825.14914.04444.9123
N52.49752.83193.35632.83130.98961.34962.17792.15763.20441.37312.1449
H62.78242.88503.79622.88300.98962.09243.12483.11914.14292.11702.5384
C71.49222.13792.10482.13791.34962.09241.28812.12533.13732.19283.2094
N82.47653.18022.59393.18102.17793.12481.28811.37212.13502.22833.2780
C93.58394.16783.90984.16822.15763.11912.12531.37211.06791.34392.2073
H104.54535.14854.72465.14913.20444.14293.13732.13501.06792.17242.7215
C113.62914.04474.28534.04441.37312.11702.19282.22831.34392.17241.0666
H124.58654.91275.31374.91232.14492.53843.20943.27802.20732.72151.0666

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 122.925 C1 C7 N8 125.774
H2 C1 H3 108.760 H2 C1 H4 108.076
H2 C1 C7 111.164 H3 C1 H4 108.760
H3 C1 C7 108.854 H4 C1 C7 111.168
N5 C7 N8 111.301 N5 C11 C9 105.142
N5 C11 H12 122.581 H6 N5 C7 126.199
H6 N5 C11 126.512 C7 N5 C11 107.290
C7 N8 C9 106.011 N8 C9 H10 121.594
N8 C9 C11 110.257 C9 C11 H12 132.277
H10 C9 C11 128.149
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.208      
2 H 0.137      
3 H 0.148      
4 H 0.137      
5 N -1.045      
6 H 0.161      
7 C 0.956      
8 N -1.181      
9 C 0.325      
10 H 0.148      
11 C 0.261      
12 H 0.161      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.703 3.626 -0.002 3.693
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.848 0.691 -0.001
y 0.691 -34.707 -0.004
z -0.001 -0.004 -38.560
Traceless
 xyz
x 5.786 0.691 -0.001
y 0.691 -0.003 -0.004
z -0.001 -0.004 -5.782
Polar
3z2-r2-11.564
x2-y23.859
xy0.691
xz-0.001
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.295 0.028 0.000
y 0.028 8.836 -0.000
z 0.000 -0.000 6.166


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