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

using model chemistry: BLYP/aug-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 BLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-226.228337
Energy at 298.15K-226.234212
HF Energy-226.228337
Nuclear repulsion energy162.174360
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 BLYP/aug-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' 3535 3523 33.69      
2 A' 3194 3183 2.00      
3 A' 3169 3158 0.54      
4 A' 3166 3155 4.84      
5 A' 1494 1489 7.77      
6 A' 1439 1434 16.87      
7 A' 1366 1362 13.45      
8 A' 1305 1300 5.56      
9 A' 1243 1238 0.42      
10 A' 1113 1109 5.56      
11 A' 1104 1100 2.75      
12 A' 1054 1050 14.58      
13 A' 1036 1032 36.24      
14 A' 916 913 1.36      
15 A' 877 874 8.69      
16 A" 839 836 5.34      
17 A" 776 773 42.47      
18 A" 705 703 32.63      
19 A" 661 659 3.16      
20 A" 626 624 10.23      
21 A" 518 516 81.97      

Unscaled Zero Point Vibrational Energy (zpe) 15067.7 cm-1
Scaled (by 0.9966) Zero Point Vibrational Energy (zpe) 15016.4 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 BLYP/aug-cc-pVTZ
ABC
0.32077 0.30995 0.15764

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.111 0.000
C2 -1.100 0.284 0.000
C3 1.126 0.300 0.000
N4 -0.745 -0.990 0.000
C5 0.641 -0.990 0.000
H6 -0.006 2.124 0.000
H7 -2.113 0.666 0.000
H8 2.127 0.708 0.000
H9 1.205 -1.914 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37601.38792.22992.19681.01272.15992.16513.2563
C21.37602.22601.32312.15752.14021.08303.25463.1851
C31.38792.22602.27331.37802.14663.26011.08092.2153
N42.22991.32312.27331.38663.20092.14813.33692.1581
C52.19682.15751.37801.38663.18033.21392.25601.0824
H61.01272.14022.14663.20093.18032.56292.56044.2155
H72.15991.08303.26012.14813.21392.56294.24084.2032
H82.16513.25461.08093.33692.25602.56044.24082.7789
H93.25633.18512.21532.15811.08244.21554.20322.7789

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 111.401 N1 C2 H7 122.448
N1 C3 C5 105.169 N1 C3 H8 122.076
C2 N1 C3 107.293 C2 N1 H6 126.605
C2 N4 C5 105.515 C3 N1 H6 126.102
C3 C5 N4 110.623 C3 C5 H9 128.005
N4 C2 H7 126.152 N4 C5 H9 121.372
C5 C3 H8 132.755
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.072      
2 C -0.443      
3 C -0.426      
4 N -0.424      
5 C -0.179      
6 H 0.053      
7 H 0.476      
8 H 0.424      
9 H 0.447      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.141 3.472 0.000 3.655
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.535 -3.350 0.000
y -3.350 -26.610 0.000
z 0.000 0.000 -32.280
Traceless
 xyz
x 1.910 -3.350 0.000
y -3.350 3.297 0.000
z 0.000 0.000 -5.207
Polar
3z2-r2-10.414
x2-y2-0.925
xy-3.350
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.073 -0.028 -0.000
y -0.028 8.706 -0.000
z -0.000 -0.000 5.248


<r2> (average value of r2) Å2
<r2> 81.193
(<r2>)1/2 9.011