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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-222.030243
Energy at 298.15K-222.031681
Nuclear repulsion energy121.620161
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 B3PW91/STO-3G
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 3323 2941 9.86      
2 A1 2414 2136 7.36      
3 A1 1583 1401 9.54      
4 A1 927 820 2.69      
5 A1 589 521 0.47      
6 A1 144 128 5.67      
7 A2 1302 1153 0.00      
8 A2 370 327 0.00      
9 B1 3415 3022 14.01      
10 B1 998 883 2.15      
11 B1 346 306 0.05      
12 B2 2407 2130 29.61      
13 B2 1413 1250 2.47      
14 B2 1010 894 4.85      
15 B2 374 331 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 10306.8 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 9121.5 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 B3PW91/STO-3G
ABC
0.64028 0.09413 0.08338

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.875
C2 0.000 1.242 0.036
C3 0.000 -1.242 0.036
H4 0.897 0.000 1.530
H5 -0.897 0.000 1.530
N6 0.000 2.239 -0.624
N7 0.000 -2.239 -0.624

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.49951.49951.11061.11062.69482.6948
C21.49952.48482.14022.14021.19543.5436
C31.49952.48482.14022.14023.54361.1954
H41.11062.14022.14021.79483.23383.2338
H51.11062.14022.14021.79483.23383.2338
N62.69481.19543.54363.23383.23384.4785
N72.69483.54361.19543.23383.23384.4785

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.446 C1 C3 N7 179.446
C2 C1 C3 111.900 C2 C1 H4 109.262
C2 C1 H5 109.262 C3 C1 H4 109.262
C3 C1 H5 109.262 H4 C1 H5 107.804
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.147      
2 C 0.080      
3 C 0.080      
4 H 0.148      
5 H 0.148      
6 N -0.154      
7 N -0.154      


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 3.052 3.052
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.602 0.000 0.000
y 0.000 -37.470 0.000
z 0.000 0.000 -24.942
Traceless
 xyz
x 6.604 0.000 0.000
y 0.000 -12.698 0.000
z 0.000 0.000 6.094
Polar
3z2-r212.188
x2-y212.868
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.606 0.000 0.000
y 0.000 4.506 0.000
z 0.000 0.000 2.633


<r2> (average value of r2) Å2
<r2> 123.096
(<r2>)1/2 11.095