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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-224.884425
Energy at 298.15K-224.886099
Nuclear repulsion energy124.628936
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 B3PW91/6-31G**
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 3067 2940 0.67      
2 A1 2399 2299 0.63      
3 A1 1444 1384 14.70      
4 A1 912 874 4.72      
5 A1 583 559 0.33      
6 A1 146 140 10.27      
7 A2 1238 1186 0.00      
8 A2 379 363 0.00      
9 B1 3114 2984 3.28      
10 B1 934 895 1.16      
11 B1 344 330 0.26      
12 B2 2394 2295 2.05      
13 B2 1341 1286 2.35      
14 B2 1000 958 6.02      
15 B2 375 360 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 9834.2 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 9425.1 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 B3PW91/6-31G**
ABC
0.69894 0.09746 0.08692

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.836
C2 0.000 1.220 0.026
C3 0.000 -1.220 0.026
H4 0.883 0.000 1.486
H5 -0.883 0.000 1.486
N6 0.000 2.201 -0.593
N7 0.000 -2.201 -0.593

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46471.46471.09691.09692.62352.6235
C21.46472.44092.09822.09821.15903.4767
C31.46472.44092.09822.09823.47671.1590
H41.09692.09822.09821.76573.15363.1536
H51.09692.09822.09821.76573.15363.1536
N62.62351.15903.47673.15363.15364.4016
N72.62353.47671.15903.15363.15364.4016

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.673 C1 C3 N7 178.673
C2 C1 C3 112.869 C2 C1 H4 109.154
C2 C1 H5 109.154 C3 C1 H4 109.154
C3 C1 H5 109.154 H4 C1 H5 107.198
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.347      
2 C 0.377      
3 C 0.377      
4 H 0.242      
5 H 0.242      
6 N -0.446      
7 N -0.446      


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 3.747 3.747
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.233 0.000 0.000
y 0.000 -41.412 0.000
z 0.000 0.000 -26.184
Traceless
 xyz
x 7.565 0.000 0.000
y 0.000 -15.204 0.000
z 0.000 0.000 7.639
Polar
3z2-r215.277
x2-y215.179
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.333 0.000 0.000
y 0.000 7.277 0.000
z 0.000 0.000 4.626


<r2> (average value of r2) Å2
<r2> 119.592
(<r2>)1/2 10.936