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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-224.965261
Energy at 298.15K-224.966987
Nuclear repulsion energy125.362526
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 mPW1PW91/6-311G*
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 3083 2942 0.21      
2 A1 2413 2303 0.66      
3 A1 1461 1395 16.51      
4 A1 920 878 4.80      
5 A1 597 570 0.40      
6 A1 149 143 10.52      
7 A2 1268 1210 0.00      
8 A2 385 367 0.00      
9 B1 3124 2981 2.05      
10 B1 944 901 0.77      
11 B1 349 333 0.14      
12 B2 2409 2299 2.23      
13 B2 1363 1301 2.25      
14 B2 1010 964 6.94      
15 B2 385 368 0.46      

Unscaled Zero Point Vibrational Energy (zpe) 9930.0 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 9477.2 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 mPW1PW91/6-311G*
ABC
0.70737 0.09851 0.08787

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.830
C2 0.000 1.216 0.024
C3 0.000 -1.216 0.024
H4 0.879 0.000 1.481
H5 -0.879 0.000 1.481
N6 0.000 2.188 -0.588
N7 0.000 -2.188 -0.588

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.45891.45891.09361.09362.60772.6077
C21.45892.43202.09122.09121.14903.4587
C31.45892.43202.09122.09123.45871.1490
H41.09362.09122.09121.75833.13723.1372
H51.09362.09122.09121.75833.13723.1372
N62.60771.14903.45873.13723.13724.3760
N72.60773.45871.14903.13723.13724.3760

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.686 C1 C3 N7 178.686
C2 C1 C3 112.920 C2 C1 H4 109.185
C2 C1 H5 109.185 C3 C1 H4 109.185
C3 C1 H5 109.185 H4 C1 H5 107.009
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.510      
2 C 0.183      
3 C 0.183      
4 H 0.322      
5 H 0.322      
6 N -0.250      
7 N -0.250      


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 3.792 3.792
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.557 0.000 0.000
y 0.000 -41.944 0.000
z 0.000 0.000 -26.544
Traceless
 xyz
x 7.687 0.000 0.000
y 0.000 -15.393 0.000
z 0.000 0.000 7.706
Polar
3z2-r215.413
x2-y215.387
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.520 0.000 0.000
y 0.000 7.369 0.000
z 0.000 0.000 4.800


<r2> (average value of r2) Å2
<r2> 118.763
(<r2>)1/2 10.898