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

using model chemistry: HF/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 HF/6-31G
 hartrees
Energy at 0K-263.738546
Energy at 298.15K-263.746828
Nuclear repulsion energy225.722670
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/6-31G
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 3940 3558 80.86      
2 A 3499 3159 5.22      
3 A 3473 3135 2.71      
4 A 3318 2996 5.30      
5 A 3245 2930 26.84      
6 A 3192 2882 31.71      
7 A 1767 1596 69.64      
8 A 1675 1513 7.06      
9 A 1647 1487 1.76      
10 A 1644 1484 10.79      
11 A 1587 1433 0.76      
12 A 1576 1423 43.49      
13 A 1510 1364 1.48      
14 A 1406 1269 23.21      
15 A 1266 1143 8.55      
16 A 1222 1103 5.99      
17 A 1201 1084 5.97      
18 A 1194 1078 28.30      
19 A 1111 1003 14.37      
20 A 1072 968 7.19      
21 A 1043 942 3.76      
22 A 1030 930 2.11      
23 A 881 796 43.50      
24 A 768 694 49.80      
25 A 729 658 2.13      
26 A 728 657 133.98      
27 A 701 633 28.81      
28 A 376 340 6.79      
29 A 287 259 8.63      
30 A 103 93 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 23594.3 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 21303.3 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/6-31G
ABC
0.30314 0.11996 0.08733

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.110 -0.027 -0.000
H2 2.495 0.481 0.878
H3 2.484 -1.039 -0.001
H4 2.495 0.482 -0.877
N5 -0.165 1.047 0.000
H6 0.150 1.986 -0.001
C7 0.624 -0.068 -0.000
N8 -0.115 -1.145 0.000
C9 -1.436 -0.722 -0.000
H10 -2.241 -1.419 -0.000
C11 -1.485 0.630 -0.000
H12 -2.301 1.313 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.08491.07911.08492.51662.80981.48712.49013.61434.56833.65474.6107
H21.08491.75581.75532.85842.92192.13883.19784.20455.17794.07844.9467
H31.07911.75581.75583.37263.82092.09852.60113.93344.74004.30575.3324
H41.08491.75531.75582.85822.92102.13893.19824.20465.17824.07834.9465
N52.51662.85843.37262.85820.98961.36652.19252.17903.22361.38372.1524
H62.80982.92193.82092.92100.98962.10783.14133.13834.16012.12312.5414
C71.48712.13882.09852.13891.36652.10781.30552.16173.16712.22123.2349
N82.49013.19782.60113.19822.19253.14131.30551.38742.14342.24203.2895
C93.61434.20453.93344.20462.17903.13832.16171.38741.06411.35362.2117
H104.56835.17794.74005.17823.22364.16013.16712.14341.06412.18462.7332
C113.65474.07844.30574.07831.38372.12312.22122.24201.35362.18461.0644
H124.61074.94675.33244.94652.15242.54143.23493.28952.21172.73321.0644

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 123.693 C1 C7 N8 126.046
H2 C1 H3 108.467 H2 C1 H4 107.989
H2 C1 C7 111.571 H3 C1 H4 108.465
H3 C1 C7 108.683 H4 C1 C7 111.574
N5 C7 N8 110.261 N5 C11 C9 105.500
N5 C11 H12 122.554 H6 N5 C7 126.162
H6 N5 C11 126.101 C7 N5 C11 107.736
C7 N8 C9 106.746 N8 C9 H10 121.371
N8 C9 C11 109.757 C9 C11 H12 131.946
H10 C9 C11 128.872
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.479 -0.278    
2 H 0.174 0.068    
3 H 0.214 0.109    
4 H 0.174 0.068    
5 N -0.917 -0.326    
6 H 0.387 0.314    
7 C 0.547 0.571    
8 N -0.557 -0.719    
9 C -0.079 0.243    
10 H 0.212 0.071    
11 C 0.091 -0.321    
12 H 0.232 0.199    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.423 3.945 -0.002 3.968
CHELPG 0.359 3.881 -0.001 3.897
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.808 0.672 -0.001
y 0.672 -35.329 -0.003
z -0.001 -0.003 -38.539
Traceless
 xyz
x 7.126 0.672 -0.001
y 0.672 -1.156 -0.003
z -0.001 -0.003 -5.970
Polar
3z2-r2-11.940
x2-y25.521
xy0.672
xz-0.001
yz-0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.694 0.201 0.000
y 0.201 7.552 -0.000
z 0.000 -0.000 3.701


<r2> (average value of r2) Å2
<r2> 138.656
(<r2>)1/2 11.775