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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: mPW1PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-224.838550
Energy at 298.15K-224.840264
Nuclear repulsion energy124.325772
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 mPW1PW91/6-31G
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 3082 2918 0.45      
2 A1 2369 2243 0.73      
3 A1 1499 1419 24.42      
4 A1 919 870 7.40      
5 A1 594 562 0.00      
6 A1 150 142 8.82      
7 A2 1286 1218 0.00      
8 A2 381 361 0.00      
9 B1 3129 2962 2.57      
10 B1 981 929 0.71      
11 B1 347 328 0.18      
12 B2 2366 2240 3.00      
13 B2 1392 1318 0.05      
14 B2 1025 971 10.83      
15 B2 372 352 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 9946.1 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 9414.9 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 mPW1PW91/6-31G
ABC
0.69963 0.09695 0.08651

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.833
C2 0.000 1.220 0.028
C3 0.000 -1.220 0.028
H4 0.879 0.000 1.488
H5 -0.879 0.000 1.488
N6 0.000 2.208 -0.594
N7 0.000 -2.208 -0.594

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46151.46151.09661.09662.62892.6289
C21.46152.44042.09592.09591.16753.4845
C31.46152.44042.09592.09593.48451.1675
H41.09662.09592.09591.75873.15953.1595
H51.09662.09592.09591.75873.15953.1595
N62.62891.16753.48453.15953.15954.4167
N72.62893.48451.16753.15953.15954.4167

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.781 C1 C3 N7 178.781
C2 C1 C3 113.206 C2 C1 H4 109.202
C2 C1 H5 109.202 C3 C1 H4 109.202
C3 C1 H5 109.202 H4 C1 H5 106.616
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.403      
2 C 0.188      
3 C 0.188      
4 H 0.283      
5 H 0.283      
6 N -0.269      
7 N -0.269      


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 3.834 3.834
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.468 0.000 0.000
y 0.000 -42.509 0.000
z 0.000 0.000 -26.589
Traceless
 xyz
x 8.081 0.000 0.000
y 0.000 -15.981 0.000
z 0.000 0.000 7.900
Polar
3z2-r215.800
x2-y216.041
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.120 0.000 0.000
y 0.000 7.118 0.000
z 0.000 0.000 4.441


<r2> (average value of r2) Å2
<r2> 121.116
(<r2>)1/2 11.005