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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: HF/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-311+G(3df,2p)
 hartrees
Energy at 0K-223.718665
Energy at 298.15K-223.720602
Nuclear repulsion energy126.318757
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 HF/6-311+G(3df,2p)
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 3217 2923 0.41      
2 A1 2612 2373 1.84      
3 A1 1577 1432 10.98      
4 A1 961 874 7.94      
5 A1 638 579 2.66      
6 A1 166 151 14.94      
7 A2 1352 1228 0.00      
8 A2 421 382 0.00      
9 B1 3261 2963 2.27      
10 B1 1033 939 0.25      
11 B1 383 348 2.71      
12 B2 2609 2371 9.04      
13 B2 1470 1335 11.56      
14 B2 1042 946 15.63      
15 B2 422 383 2.20      

Unscaled Zero Point Vibrational Energy (zpe) 10580.2 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 9613.2 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 HF/6-311+G(3df,2p)
ABC
0.71690 0.09940 0.08871

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.833
C2 0.000 1.221 0.017
C3 0.000 -1.221 0.017
H4 0.876 0.000 1.466
H5 -0.876 0.000 1.466
N6 0.000 2.173 -0.581
N7 0.000 -2.173 -0.581

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46841.46841.08121.08122.59242.5924
C21.46842.44152.08792.08791.12433.4463
C31.46842.44152.08792.08793.44631.1243
H41.08122.08792.08791.75183.11143.1114
H51.08122.08792.08791.75183.11143.1114
N62.59241.12433.44633.11143.11144.3467
N72.59243.44631.12433.11143.11144.3467

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.321 C1 C3 N7 178.321
C2 C1 C3 112.482 C2 C1 H4 109.014
C2 C1 H5 109.014 C3 C1 H4 109.014
C3 C1 H5 109.014 H4 C1 H5 108.214
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.020      
2 C 0.890      
3 C 0.890      
4 H 0.206      
5 H 0.206      
6 N -1.106      
7 N -1.106      


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 4.068 4.068
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.019 0.000 0.000
y 0.000 -43.695 0.000
z 0.000 0.000 -27.042
Traceless
 xyz
x 8.349 0.000 0.000
y 0.000 -16.664 0.000
z 0.000 0.000 8.315
Polar
3z2-r216.631
x2-y216.675
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.429 0.000 0.000
y 0.000 7.745 0.000
z 0.000 0.000 5.412


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000