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

using model chemistry: B97D3/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/cc-pVTZ
 hartrees
Energy at 0K-226.151272
Energy at 298.15K-226.157159
HF Energy-226.151272
Nuclear repulsion energy162.776571
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 B97D3/cc-pVTZ
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' 3594 3544 32.18      
2 A' 3220 3175 3.75      
3 A' 3192 3147 0.67      
4 A' 3188 3144 8.62      
5 A' 1513 1491 9.34      
6 A' 1461 1440 14.25      
7 A' 1390 1371 12.87      
8 A' 1325 1306 5.14      
9 A' 1251 1234 0.17      
10 A' 1143 1127 5.66      
11 A' 1118 1102 3.05      
12 A' 1068 1053 14.30      
13 A' 1050 1036 33.83      
14 A' 929 916 1.89      
15 A' 893 880 10.26      
16 A" 834 823 6.17      
17 A" 774 763 37.61      
18 A" 698 688 28.16      
19 A" 669 660 4.04      
20 A" 632 623 8.98      
21 A" 506 498 79.24      

Unscaled Zero Point Vibrational Energy (zpe) 15223.3 cm-1
Scaled (by 0.986) Zero Point Vibrational Energy (zpe) 15010.2 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 B97D3/cc-pVTZ
ABC
0.32332 0.31215 0.15882

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.743 -0.987 0.000
H2 -0.005 2.114 0.000
C3 1.122 0.300 0.000
H4 2.121 0.709 0.000
C5 0.638 -0.987 0.000
H6 1.201 -1.909 0.000
H7 -2.107 0.666 0.000
C8 -1.095 0.284 0.000
N9 0.000 1.106 0.000

Atom - Atom Distances (Å)
  N1 H2 C3 H4 C5 H6 H7 C8 N9
N13.18712.26583.32801.38042.15182.14301.31872.2207
H23.18712.13532.54773.16644.19992.55232.13001.0077
C32.26582.13531.07911.37512.21073.24972.21741.3817
H43.32802.54771.07912.25302.77514.22773.24392.1576
C51.38043.16641.37512.25301.08103.20382.14892.1879
H62.15184.19992.21072.77511.08104.19233.17553.2458
H72.14302.55233.24974.22773.20384.19231.08142.1522
C81.31872.13002.21743.24392.14893.17551.08141.3694
N92.22071.00771.38172.15762.18793.24582.15221.3694

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 69.931 N1 C2 H7 42.057
N1 C3 C5 34.762 N1 C3 H8 34.191
C2 N1 C3 42.006 C2 N1 H6 101.997
C2 N4 C5 82.289 C3 N1 H6 59.990
C3 C5 N4 20.535 C3 C5 H9 37.578
N4 C2 H7 111.988 N4 C5 H9 58.113
C5 C3 H8 68.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.195      
2 H 0.142      
3 C -0.129      
4 H 0.103      
5 C -0.088      
6 H 0.100      
7 H 0.102      
8 C -0.034      
9 N -0.001      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.072 3.457 0.000 3.619
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.705 -3.139 0.000
y -3.139 -25.584 0.000
z 0.000 0.000 -31.493
Traceless
 xyz
x 1.834 -3.139 0.000
y -3.139 3.515 0.000
z 0.000 0.000 -5.349
Polar
3z2-r2-10.698
x2-y2-1.121
xy-3.139
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.105 -0.142 0.000
y -0.142 7.718 0.000
z 0.000 0.000 4.058


<r2> (average value of r2) Å2
<r2> 80.182
(<r2>)1/2 8.954