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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-224.926741
Energy at 298.15K-224.928353
Nuclear repulsion energy123.829074
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 BLYP/6-31G(2df,p)
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 2963 2946 0.00      
2 A1 2283 2270 0.12      
3 A1 1403 1395 10.11      
4 A1 868 863 3.60      
5 A1 564 561 0.39      
6 A1 144 143 9.74      
7 A2 1203 1196 0.00      
8 A2 371 369 0.00      
9 B1 2995 2978 0.84      
10 B1 913 907 0.49      
11 B1 341 339 0.50      
12 B2 2275 2262 0.58      
13 B2 1293 1286 5.22      
14 B2 951 946 3.82      
15 B2 366 364 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 9465.1 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 9413.0 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 BLYP/6-31G(2df,p)
ABC
0.69098 0.09615 0.08576

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.839
C2 0.000 1.229 0.026
C3 0.000 -1.229 0.026
H4 0.886 0.000 1.498
H5 -0.886 0.000 1.498
N6 0.000 2.216 -0.596
N7 0.000 -2.216 -0.596

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47381.47381.10401.10402.64002.6400
C21.47382.45852.11242.11241.16633.5006
C31.47382.45852.11242.11243.50061.1663
H41.10402.11242.11241.77213.17483.1748
H51.10402.11242.11241.77213.17483.1748
N62.64001.16633.50063.17483.17484.4312
N72.64003.50061.16633.17483.17484.4312

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.771 C1 C3 N7 178.771
C2 C1 C3 113.034 C2 C1 H4 109.216
C2 C1 H5 109.216 C3 C1 H4 109.216
C3 C1 H5 109.216 H4 C1 H5 106.750
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.428      
2 C 0.316      
3 C 0.316      
4 H 0.191      
5 H 0.191      
6 N -0.293      
7 N -0.293      


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 3.603 3.603
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.276 0.000 0.000
y 0.000 -41.319 0.000
z 0.000 0.000 -26.365
Traceless
 xyz
x 7.566 0.000 0.000
y 0.000 -14.998 0.000
z 0.000 0.000 7.432
Polar
3z2-r214.865
x2-y215.043
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.775 0.000 0.000
y 0.000 7.749 0.000
z 0.000 0.000 5.043


<r2> (average value of r2) Å2
<r2> 121.688
(<r2>)1/2 11.031