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All results from a given calculation for C3H4N2 (1H-Imidazole)

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-226.122327
Energy at 298.15K-226.128318
HF Energy-226.122327
Nuclear repulsion energy163.925295
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 B1B95/6-31G**
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' 3700 3533 54.50      
2 A' 3329 3178 1.97      
3 A' 3299 3150 2.10      
4 A' 3294 3145 7.78      
5 A' 1604 1531 14.10      
6 A' 1549 1479 20.34      
7 A' 1482 1415 15.05      
8 A' 1413 1350 9.57      
9 A' 1299 1240 0.73      
10 A' 1206 1152 4.60      
11 A' 1171 1118 2.84      
12 A' 1125 1074 25.51      
13 A' 1097 1048 28.11      
14 A' 944 901 1.83      
15 A' 901 861 7.65      
16 A" 871 831 4.95      
17 A" 815 778 31.30      
18 A" 733 700 27.66      
19 A" 689 658 2.02      
20 A" 652 622 17.58      
21 A" 535 511 100.68      

Unscaled Zero Point Vibrational Energy (zpe) 15852.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 15136.4 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 B1B95/6-31G**
ABC
0.32925 0.31558 0.16113

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.102 0.000
C2 -1.081 0.278 0.000
C3 1.114 0.299 0.000
N4 -0.741 -0.982 0.000
C5 0.632 -0.979 0.000
H6 -0.011 2.109 0.000
H7 -2.093 0.659 0.000
H8 2.113 0.703 0.000
H9 1.193 -1.902 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.35951.37322.21222.17501.00672.13942.15063.2322
C21.35952.19501.30532.12482.12061.08133.22263.1500
C31.37322.19502.25411.36572.13103.22691.07822.2022
N42.21221.30532.25411.37293.17612.12673.31472.1412
C52.17502.12481.36571.37293.15403.17952.24141.0800
H61.00672.12062.13103.17613.15402.53692.54734.1875
H72.13941.08133.22692.12673.17952.53694.20654.1660
H82.15063.22261.07823.31472.24142.54734.20652.7629
H93.23223.15002.20222.14121.08004.18754.16602.7629

picture of 1H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N4 112.213 N1 C2 H7 122.033
N1 C3 C5 105.147 N1 C3 H8 122.176
C2 N1 C3 106.877 C2 N1 H6 126.687
C2 N4 C5 104.970 C3 N1 H6 126.436
C3 C5 N4 110.793 C3 C5 H9 128.061
N4 C2 H7 125.754 N4 C5 H9 121.146
C5 C3 H8 132.678
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.587      
2 C 0.206      
3 C 0.005      
4 N -0.434      
5 C -0.058      
6 H 0.354      
7 H 0.176      
8 H 0.177      
9 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.121 3.584 0.000 3.755
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.939 -3.128 0.000
y -3.128 -24.853 0.000
z 0.000 0.000 -31.074
Traceless
 xyz
x 2.024 -3.128 0.000
y -3.128 3.654 0.000
z 0.000 0.000 -5.678
Polar
3z2-r2-11.356
x2-y2-1.086
xy-3.128
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.974 -0.192 0.000
y -0.192 6.702 0.000
z 0.000 0.000 2.601


<r2> (average value of r2) Å2
<r2> 78.922
(<r2>)1/2 8.884