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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: SVWN/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at SVWN/cc-pVTZ
 hartrees
Energy at 0K-224.968238
Energy at 298.15K-224.974206
HF Energy-224.968238
Nuclear repulsion energy167.441776
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 SVWN/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 A1 3130 3100 11.80      
2 A1 2969 2940 4.51      
3 A1 1679 1663 16.71      
4 A1 1374 1361 0.28      
5 A1 1283 1270 52.06      
6 A1 1241 1229 4.98      
7 A1 1029 1019 1.91      
8 A1 915 906 12.91      
9 A2 1078 1068 0.00      
10 A2 901 892 0.00      
11 A2 546 540 0.00      
12 B1 3002 2973 7.87      
13 B1 942 933 20.53      
14 B1 798 790 4.42      
15 B1 379 376 41.19      
16 B2 3116 3086 3.10      
17 B2 1752 1735 0.33      
18 B2 1345 1332 36.46      
19 B2 1175 1163 0.04      
20 B2 1046 1036 23.09      
21 B2 916 907 87.58      

Unscaled Zero Point Vibrational Energy (zpe) 15306.2 cm-1
Scaled (by 0.9903) Zero Point Vibrational Energy (zpe) 15157.7 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 SVWN/cc-pVTZ
ABC
0.36518 0.30757 0.17245

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.186
N2 0.000 0.995 0.283
N3 0.000 -0.995 0.283
C4 0.000 0.720 -0.940
C5 0.000 -0.720 -0.940
H6 -0.893 0.000 1.836
H7 0.893 0.000 1.836
H8 0.000 1.471 -1.732
H9 0.000 -1.471 -1.732

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.34431.34432.24542.24541.10461.10463.26863.2686
N21.34431.99071.25382.10692.04992.04992.07073.1852
N31.34431.99072.10691.25382.04992.04993.18522.0707
C42.24541.25382.10691.44033.00453.00451.09152.3301
C52.24542.10691.25381.44033.00453.00452.33011.0915
H61.10462.04992.04993.00453.00451.78613.96223.9622
H71.10462.04992.04993.00453.00451.78613.96223.9622
H83.26862.07073.18521.09152.33013.96223.96222.9425
H93.26863.18522.07072.33011.09153.96223.96222.9425

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 119.554 C1 N3 C5 119.554
N2 C1 N3 95.534 N2 C1 H6 113.302
N2 C1 H7 113.302 N2 C4 C5 102.679
N2 C4 H8 123.840 N3 C1 H6 113.302
N3 C1 H7 113.302 N3 C5 C4 102.679
N3 C5 H9 123.840 C4 C5 H9 133.480
C5 C4 H8 133.480 H6 C1 H7 107.896
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.086      
2 N -0.103      
3 N -0.103      
4 C -0.135      
5 C -0.135      
6 H 0.149      
7 H 0.149      
8 H 0.132      
9 H 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.482 0.482
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.370 0.000 0.000
y 0.000 -35.211 0.000
z 0.000 0.000 -21.800
Traceless
 xyz
x 0.135 0.000 0.000
y 0.000 -10.126 0.000
z 0.000 0.000 9.991
Polar
3z2-r219.982
x2-y26.841
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.348 0.000 0.000
y 0.000 6.281 0.000
z 0.000 0.000 8.609


<r2> (average value of r2) Å2
<r2> 76.718
(<r2>)1/2 8.759