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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: CISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CISD/6-311G**
 hartrees
Energy at 0K-224.314489
Energy at 298.15K-224.316314
Nuclear repulsion energy125.443885
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 CISD/6-311G**
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 3185 3185 0.16      
2 A1 2494 2494 0.28      
3 A1 1522 1522 11.47      
4 A1 944 944 7.66      
5 A1 615 615 0.81      
6 A1 157 157 11.47      
7 A2 1305 1305 0.00      
8 A2 397 397 0.00      
9 B1 3233 3233 2.05      
10 B1 990 990 0.08      
11 B1 363 363 0.57      
12 B2 2491 2491 0.52      
13 B2 1416 1416 5.90      
14 B2 1033 1033 10.77      
15 B2 399 399 0.96      

Unscaled Zero Point Vibrational Energy (zpe) 10271.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10271.6 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 CISD/6-311G**
ABC
0.69844 0.09885 0.08801

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.841
C2 0.000 1.218 0.023
C3 0.000 -1.218 0.023
H4 0.880 0.000 1.479
H5 -0.880 0.000 1.479
N6 0.000 2.182 -0.592
N7 0.000 -2.182 -0.592

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46721.46721.08721.08722.61022.6102
C21.46722.43662.09252.09251.14323.4555
C31.46722.43662.09252.09253.45551.1432
H41.08722.09252.09251.75983.13443.1344
H51.08722.09252.09251.75983.13443.1344
N62.61021.14323.45553.13443.13444.3642
N72.61023.45551.14323.13443.13444.3642

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.664 C1 C3 N7 178.664
C2 C1 C3 112.269 C2 C1 H4 109.105
C2 C1 H5 109.105 C3 C1 H4 109.105
C3 C1 H5 109.105 H4 C1 H5 108.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CISD/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.043      
2 C 0.116      
3 C 0.116      
4 H 0.203      
5 H 0.203      
6 N -0.298      
7 N -0.298      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 119.820
(<r2>)1/2 10.946