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

using model chemistry: B2PLYP/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/cc-pVDZ
 hartrees
Energy at 0K-226.001380
Energy at 298.15K-226.007339
HF Energy-225.760609
Nuclear repulsion energy162.596957
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 B2PLYP/cc-pVDZ
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' 3667 3512 60.04      
2 A' 3307 3167 1.13      
3 A' 3279 3140 0.83      
4 A' 3274 3135 4.97      
5 A' 1557 1492 8.97      
6 A' 1513 1449 16.45      
7 A' 1457 1395 12.13      
8 A' 1373 1315 6.85      
9 A' 1274 1220 0.57      
10 A' 1177 1127 4.55      
11 A' 1143 1095 2.64      
12 A' 1095 1048 21.58      
13 A' 1077 1031 30.35      
14 A' 938 899 2.00      
15 A' 902 864 8.12      
16 A" 859 823 4.73      
17 A" 807 773 33.47      
18 A" 724 694 27.10      
19 A" 683 654 2.08      
20 A" 648 620 13.58      
21 A" 513 491 81.95      

Unscaled Zero Point Vibrational Energy (zpe) 15632.8 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 14971.6 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 B2PLYP/cc-pVDZ
ABC
0.32418 0.31015 0.15851

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.111 0.000
C2 -1.090 0.282 0.000
C3 1.122 0.302 0.000
N4 -0.747 -0.990 0.000
C5 0.637 -0.989 0.000
H6 -0.012 2.123 0.000
H7 -2.109 0.667 0.000
H8 2.129 0.709 0.000
H9 1.204 -1.917 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36981.38322.23032.19481.01142.15512.16693.2594
C21.36982.21211.31712.14412.13351.08933.24753.1779
C31.38322.21212.27261.37942.14453.25131.08632.2214
N42.23031.31712.27261.38433.19852.14473.34102.1606
C52.19482.14411.37941.38433.17863.20662.26071.0880
H61.01142.13352.14453.19853.17862.55272.56554.2192
H72.15511.08933.25132.14473.20662.55274.23834.2018
H82.16693.24751.08633.34102.26072.56554.23832.7849
H93.25943.17792.22142.16061.08804.21924.20182.7849

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 112.197 N1 C2 H7 122.000
N1 C3 C5 105.206 N1 C3 H8 122.214
C2 N1 C3 106.932 C2 N1 H6 126.613
C2 N4 C5 105.037 C3 N1 H6 126.455
C3 C5 N4 110.628 C3 C5 H9 128.003
N4 C2 H7 125.803 N4 C5 H9 121.369
C5 C3 H8 132.580
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.086      
2 C 0.136      
3 C 0.018      
4 N -0.223      
5 C 0.021      
6 H 0.102      
7 H 0.022      
8 H 0.012      
9 H -0.002      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.024 3.547 0.000 3.692
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.746 -2.999 0.000
y -2.999 -25.403 0.000
z 0.000 0.000 -31.486
Traceless
 xyz
x 1.699 -2.999 0.000
y -2.999 3.713 0.000
z 0.000 0.000 -5.411
Polar
3z2-r2-10.822
x2-y2-1.343
xy-2.999
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.326 -0.248 0.000
y -0.248 6.933 0.000
z 0.000 0.000 2.930


<r2> (average value of r2) Å2
<r2> 80.299
(<r2>)1/2 8.961