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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-226.140198
Energy at 298.15K-226.146199
HF Energy-226.140198
Nuclear repulsion energy163.843595
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 B1B95/6-31+G**
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' 3717 3555 66.59      
2 A' 3323 3179 0.94      
3 A' 3296 3153 1.04      
4 A' 3291 3148 5.01      
5 A' 1592 1523 13.88      
6 A' 1536 1470 24.00      
7 A' 1471 1407 14.83      
8 A' 1407 1346 8.06      
9 A' 1293 1237 0.77      
10 A' 1201 1149 4.11      
11 A' 1164 1113 3.98      
12 A' 1117 1069 29.90      
13 A' 1092 1045 30.91      
14 A' 940 899 2.28      
15 A' 900 861 5.78      
16 A" 880 842 4.70      
17 A" 824 789 40.88      
18 A" 740 708 46.10      
19 A" 682 653 2.78      
20 A" 646 618 17.71      
21 A" 546 522 96.16      

Unscaled Zero Point Vibrational Energy (zpe) 15828.9 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 15141.9 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 B1B95/6-31+G**
ABC
0.32843 0.31566 0.16096

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.100 0.000
C2 -1.085 0.281 0.000
C3 1.114 0.300 0.000
N4 -0.738 -0.982 0.000
C5 0.631 -0.980 0.000
H6 -0.012 2.105 0.000
H7 -2.095 0.659 0.000
H8 2.113 0.702 0.000
H9 1.195 -1.900 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.35891.37132.20822.17331.00552.14102.15003.2284
C21.35892.19871.30942.12932.11631.07903.22523.1544
C31.37132.19872.25211.36812.12733.22921.07692.2011
N42.20821.30942.25211.36893.17102.12953.31092.1393
C52.17332.12931.36811.36893.15133.18112.24181.0786
H61.00552.11632.12733.17103.15132.53612.54604.1825
H72.14101.07903.22922.12953.18112.53614.20834.1677
H82.15003.22521.07693.31092.24182.54604.20832.7592
H93.22843.15442.20112.13931.07864.18254.16772.7592

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 111.684 N1 C2 H7 122.440
N1 C3 C5 105.002 N1 C3 H8 122.399
C2 N1 C3 107.286 C2 N1 H6 126.379
C2 N4 C5 105.290 C3 N1 H6 126.336
C3 C5 N4 110.739 C3 C5 H9 127.835
N4 C2 H7 125.877 N4 C5 H9 121.426
C5 C3 H8 132.600
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.362      
2 C 0.065      
3 C -0.091      
4 N -0.298      
5 C -0.104      
6 H 0.318      
7 H 0.158      
8 H 0.166      
9 H 0.149      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.186 3.690 0.000 3.876
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.697 -3.448 0.000
y -3.448 -25.715 0.000
z 0.000 0.000 -32.161
Traceless
 xyz
x 2.242 -3.448 0.000
y -3.448 3.713 0.000
z 0.000 0.000 -5.955
Polar
3z2-r2-11.910
x2-y2-0.981
xy-3.448
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.918 -0.001 0.000
y -0.001 7.641 0.000
z 0.000 0.000 4.457


<r2> (average value of r2) Å2
<r2> 79.547
(<r2>)1/2 8.919