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

using model chemistry: B3LYP/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 B3LYP/Def2TZVPP
 hartrees
Energy at 0K-226.309827
Energy at 298.15K-226.315817
HF Energy-226.309827
Nuclear repulsion energy163.600339
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 B3LYP/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' 3659 3522 54.87      
2 A' 3277 3155 1.13      
3 A' 3248 3127 0.31      
4 A' 3246 3124 5.37      
5 A' 1559 1500 11.58      
6 A' 1502 1446 17.01      
7 A' 1432 1378 14.07      
8 A' 1366 1315 6.10      
9 A' 1288 1240 0.36      
10 A' 1163 1119 4.67      
11 A' 1146 1103 2.84      
12 A' 1096 1055 17.53      
13 A' 1075 1035 38.56      
14 A' 948 912 1.54      
15 A' 909 875 8.51      
16 A" 882 849 3.39      
17 A" 824 793 33.62      
18 A" 740 713 39.54      
19 A" 684 658 5.37      
20 A" 649 624 9.06      
21 A" 533 514 88.72      

Unscaled Zero Point Vibrational Energy (zpe) 15613.0 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 15029.0 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 B3LYP/Def2TZVPP
ABC
0.32639 0.31559 0.16045

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.739 -0.979 0.000
H2 -0.008 2.104 0.000
C3 1.117 0.296 0.000
H4 2.113 0.698 0.000
C5 0.635 -0.983 0.000
H6 1.196 -1.902 0.000
H7 -2.098 0.664 0.000
C8 -1.090 0.285 0.000
N9 0.000 1.100 0.000

Atom - Atom Distances (Å)
  N1 H2 C3 H4 C5 H6 H7 C8 N9
N13.16832.25153.30881.37372.14342.13261.31192.2059
H23.16832.12922.54533.15324.18302.53792.11631.0045
C32.25152.12921.07471.36692.19973.23592.20671.3756
H43.30882.54531.07472.23872.75734.21183.23002.1513
C51.37373.15321.36692.23871.07673.19112.14082.1770
H62.14344.18302.19972.75731.07674.17553.16353.2309
H72.13262.53793.23594.21183.19114.17551.07722.1429
C81.31192.11632.20673.23002.14083.16351.07721.3606
N92.20591.00451.37562.15132.17703.23092.14291.3606

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 69.801 N1 C2 H7 42.105
N1 C3 C5 34.861 N1 C3 H8 34.208
C2 N1 C3 42.170 C2 N1 H6 102.179
C2 N4 C5 82.194 C3 N1 H6 60.009
C3 C5 N4 20.696 C3 C5 H9 37.596
N4 C2 H7 111.906 N4 C5 H9 58.293
C5 C3 H8 69.069
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.281      
2 H 0.161      
3 C -0.084      
4 H 0.150      
5 C -0.115      
6 H 0.133      
7 H 0.145      
8 C 0.043      
9 N -0.152      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.125 3.555 0.000 3.728
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.982 -3.293 0.000
y -3.293 -25.930 0.000
z 0.000 0.000 -31.926
Traceless
 xyz
x 1.946 -3.293 0.000
y -3.293 3.524 0.000
z 0.000 0.000 -5.470
Polar
3z2-r2-10.941
x2-y2-1.052
xy-3.293
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.038 -0.113 0.000
y -0.113 7.686 0.000
z 0.000 0.000 4.418


<r2> (average value of r2) Å2
<r2> 79.780
(<r2>)1/2 8.932