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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-224.881769
Energy at 298.15K-224.883440
Nuclear repulsion energy124.601115
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 3070 2937 0.59      
2 A1 2399 2295 0.58      
3 A1 1464 1400 14.59      
4 A1 913 874 4.71      
5 A1 584 558 0.34      
6 A1 146 140 10.22      
7 A2 1253 1198 0.00      
8 A2 379 362 0.00      
9 B1 3114 2979 2.69      
10 B1 946 905 1.24      
11 B1 345 330 0.28      
12 B2 2394 2291 1.92      
13 B2 1357 1298 2.41      
14 B2 1002 959 6.40      
15 B2 376 359 0.55      

Unscaled Zero Point Vibrational Energy (zpe) 9870.2 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 9442.9 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
0.69632 0.09752 0.08693

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 0.837
C2 0.000 1.221 0.026
C3 0.000 -1.221 0.026
H4 0.883 0.000 1.489
H5 -0.883 0.000 1.489
N6 0.000 2.200 -0.594
N7 0.000 -2.200 -0.594

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46551.46551.09771.09772.62432.6243
C21.46552.44112.10012.10011.15903.4762
C31.46552.44112.10012.10013.47621.1590
H41.09772.10012.10011.76593.15573.1557
H51.09772.10012.10011.76593.15573.1557
N62.62431.15903.47623.15573.15574.3998
N72.62433.47621.15903.15573.15574.3998

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.723 C1 C3 N7 178.723
C2 C1 C3 112.789 C2 C1 H4 109.197
C2 C1 H5 109.197 C3 C1 H4 109.197
C3 C1 H5 109.197 H4 C1 H5 107.102
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 -0.460     -0.458
2 C 0.394     0.427
3 C 0.394     0.427
4 H 0.281     0.218
5 H 0.281     0.216
6 N -0.445     -0.416
7 N -0.445     -0.416


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 3.744 3.744
CHELPG        
AIM        
ESP 0.006 0.000 3.842 3.842


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.237 0.000 0.000
y 0.000 -41.394 0.000
z 0.000 0.000 -26.208
Traceless
 xyz
x 7.564 0.000 0.000
y 0.000 -15.172 0.000
z 0.000 0.000 7.608
Polar
3z2-r215.215
x2-y215.157
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.315 0.000 0.000
y 0.000 7.241 0.000
z 0.000 0.000 4.612


<r2> (average value of r2) Å2
<r2> 119.615
(<r2>)1/2 10.937