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

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-263.962304
Energy at 298.15K-263.970389
HF Energy-263.962304
Nuclear repulsion energy227.411260
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/Def2TZVPP
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 3911 3545 78.96      
2 A 3429 3108 4.05      
3 A 3399 3081 6.14      
4 A 3280 2973 7.68      
5 A 3213 2912 24.84      
6 A 3167 2871 31.64      
7 A 1760 1595 61.09      
8 A 1660 1504 12.81      
9 A 1623 1471 12.42      
10 A 1602 1452 6.81      
11 A 1574 1427 43.81      
12 A 1541 1397 0.97      
13 A 1497 1356 2.95      
14 A 1374 1246 14.87      
15 A 1245 1129 14.80      
16 A 1230 1115 1.38      
17 A 1166 1057 30.07      
18 A 1163 1054 0.83      
19 A 1094 991 10.96      
20 A 1050 951 6.15      
21 A 1002 908 1.76      
22 A 999 906 5.28      
23 A 837 758 63.04      
24 A 758 687 10.26      
25 A 718 651 1.28      
26 A 692 627 6.65      
27 A 535 485 84.02      
28 A 375 340 5.71      
29 A 281 255 9.07      
30 A 80 72 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 23126.7 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 20962.1 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 HF/Def2TZVPP
ABC
0.30699 0.12196 0.08871

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.096 -0.025 0.000
H2 2.474 0.486 0.878
H3 2.474 -1.035 -0.001
H4 2.474 0.488 -0.877
N5 -0.165 1.032 -0.000
H6 0.156 1.966 -0.001
C7 0.609 -0.068 -0.000
N8 -0.115 -1.134 -0.000
C9 -1.415 -0.715 -0.000
H10 -2.227 -1.406 -0.000
C11 -1.472 0.625 0.000
H12 -2.288 1.310 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.08361.07871.08362.49652.77971.48842.47433.57874.53893.62744.5829
H21.08361.75681.75452.83482.88702.13493.17834.16415.14344.04544.9118
H31.07871.75681.75683.35293.79202.10182.59153.90284.71624.28175.3083
H41.08361.75451.75682.83422.88552.13493.17894.16445.14404.04524.9115
N52.49652.83483.35292.83420.98721.34472.16692.14773.19331.36902.1406
H62.77972.88703.79202.88550.98722.08293.11163.10664.12912.10922.5302
C71.48842.13492.10182.13491.34472.08291.28912.12473.13592.19323.2073
N82.47433.17832.59153.17892.16693.11161.28911.36602.12942.22173.2700
C93.57874.16413.90284.16442.14773.10662.12471.36601.06681.34062.2043
H104.53895.14344.71625.14403.19334.12913.13592.12941.06682.16702.7168
C113.62744.04544.28174.04521.36902.10922.19322.22171.34062.16701.0649
H124.58294.91185.30834.91152.14062.53023.20733.27002.20432.71681.0649

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 123.492 C1 C7 N8 125.809
H2 C1 H3 108.670 H2 C1 H4 108.102
H2 C1 C7 111.230 H3 C1 H4 108.671
H3 C1 C7 108.867 H4 C1 C7 111.233
N5 C7 N8 110.699 N5 C11 C9 104.862
N5 C11 H12 122.669 H6 N5 C7 125.869
H6 N5 C11 126.299 C7 N5 C11 107.832
C7 N8 C9 106.269 N8 C9 H10 121.671
N8 C9 C11 110.337 C9 C11 H12 132.468
H10 C9 C11 127.992
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.239      
2 H 0.072      
3 H 0.112      
4 H 0.072      
5 N -0.296      
6 H 0.185      
7 C 0.350      
8 N -0.426      
9 C 0.003      
10 H 0.090      
11 C -0.036      
12 H 0.112      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.675 3.629 -0.001 3.691
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.759 0.662 -0.001
y 0.662 -34.552 0.000
z -0.001 0.000 -38.350
Traceless
 xyz
x 5.693 0.662 -0.001
y 0.662 0.002 0.000
z -0.001 0.000 -5.695
Polar
3z2-r2-11.390
x2-y23.794
xy0.662
xz-0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.877 0.067 -0.000
y 0.067 8.540 0.000
z -0.000 0.000 5.700


<r2> (average value of r2) Å2
<r2> 136.945
(<r2>)1/2 11.702