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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-224.979963
Energy at 298.15K-224.981629
Nuclear repulsion energy124.451827
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 B3LYP/6-31G**
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 3056 2936 0.22      
2 A1 2390 2297 0.41      
3 A1 1454 1397 12.35      
4 A1 904 868 5.13      
5 A1 580 558 0.42      
6 A1 146 141 10.33      
7 A2 1242 1193 0.00      
8 A2 376 361 0.00      
9 B1 3097 2975 1.84      
10 B1 941 904 0.83      
11 B1 344 330 0.44      
12 B2 2385 2291 1.29      
13 B2 1346 1293 3.97      
14 B2 989 950 6.73      
15 B2 373 358 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 9811.0 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 9426.4 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 B3LYP/6-31G**
ABC
0.69590 0.09714 0.08662

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.838
C2 0.000 1.224 0.026
C3 0.000 -1.224 0.026
H4 0.882 0.000 1.489
H5 -0.882 0.000 1.489
N6 0.000 2.204 -0.594
N7 0.000 -2.204 -0.594

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46911.46911.09671.09672.62792.6279
C21.46912.44832.10212.10211.15903.4833
C31.46912.44832.10212.10213.48331.1590
H41.09672.10212.10211.76493.15813.1581
H51.09672.10212.10211.76493.15813.1581
N62.62791.15903.48333.15813.15814.4073
N72.62793.48331.15903.15813.15814.4073

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.752 C1 C3 N7 178.752
C2 C1 C3 112.874 C2 C1 H4 109.163
C2 C1 H5 109.163 C3 C1 H4 109.163
C3 C1 H5 109.163 H4 C1 H5 107.153
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.282      
2 C 0.359      
3 C 0.359      
4 H 0.213      
5 H 0.213      
6 N -0.431      
7 N -0.431      


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 3.713 3.713
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.301 0.000 0.000
y 0.000 -41.520 0.000
z 0.000 0.000 -26.333
Traceless
 xyz
x 7.626 0.000 0.000
y 0.000 -15.203 0.000
z 0.000 0.000 7.578
Polar
3z2-r215.155
x2-y215.219
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.327 0.000 0.000
y 0.000 7.237 0.000
z 0.000 0.000 4.614


<r2> (average value of r2) Å2
<r2> 120.022
(<r2>)1/2 10.955