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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-224.229107
Energy at 298.15K-224.230876
HF Energy-223.642392
Nuclear repulsion energy125.104355
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3193 2950 0.56      
2 A1 2515 2323 0.41      
3 A1 1547 1429 12.81      
4 A1 951 878 7.80      
5 A1 610 563 0.81      
6 A1 154 142 11.95      
7 A2 1313 1213 0.00      
8 A2 388 358 0.00      
9 B1 3243 2996 2.37      
10 B1 1004 927 0.49      
11 B1 356 329 0.87      
12 B2 2511 2319 0.71      
13 B2 1434 1325 3.71      
14 B2 1042 962 12.13      
15 B2 387 357 1.11      

Unscaled Zero Point Vibrational Energy (zpe) 10323.3 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 9535.6 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 CID/6-31G*
ABC
0.69473 0.09844 0.08762

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.843
C2 0.000 1.218 0.023
C3 0.000 -1.218 0.023
H4 0.880 0.000 1.485
H5 -0.880 0.000 1.485
N6 0.000 2.188 -0.593
N7 0.000 -2.188 -0.593

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46801.46801.08881.08882.61722.6172
C21.46802.43592.09582.09581.14953.4613
C31.46802.43592.09582.09583.46131.1495
H41.08882.09582.09581.75913.14303.1430
H51.08882.09582.09581.75913.14303.1430
N62.61721.14953.46133.14303.14304.3761
N72.61723.46131.14953.14303.14304.3761

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.502 C1 C3 N7 178.502
C2 C1 C3 112.127 C2 C1 H4 109.212
C2 C1 H5 109.212 C3 C1 H4 109.212
C3 C1 H5 109.212 H4 C1 H5 107.767
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CID/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.383      
2 C 0.326      
3 C 0.326      
4 H 0.287      
5 H 0.287      
6 N -0.422      
7 N -0.422      


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> 119.100
(<r2>)1/2 10.913