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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: HF/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-223.671629
Energy at 298.15K-223.673536
Nuclear repulsion energy125.599294
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 HF/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3230 2942 0.19      
2 A1 2610 2377 1.96      
3 A1 1553 1414 10.76      
4 A1 963 876 8.66      
5 A1 634 577 2.23      
6 A1 163 149 14.59      
7 A2 1337 1218 0.00      
8 A2 412 375 0.00      
9 B1 3283 2990 2.26      
10 B1 1023 931 0.16      
11 B1 375 341 2.45      
12 B2 2608 2375 8.94      
13 B2 1450 1321 12.54      
14 B2 1047 954 15.83      
15 B2 410 374 2.14      

Unscaled Zero Point Vibrational Energy (zpe) 10548.9 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 9605.9 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 HF/aug-cc-pVDZ
ABC
0.70568 0.09856 0.08790

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.839
C2 0.000 1.224 0.019
C3 0.000 -1.224 0.019
H4 0.882 0.000 1.475
H5 -0.882 0.000 1.475
N6 0.000 2.183 -0.586
N7 0.000 -2.183 -0.586

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47301.47301.08761.08762.60712.6071
C21.47302.44772.09662.09661.13433.4606
C31.47302.44772.09662.09663.46061.1343
H41.08762.09662.09661.76433.12933.1293
H51.08762.09662.09661.76433.12933.1293
N62.60711.13433.46063.12933.12934.3669
N72.60713.46061.13433.12933.12934.3669

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.409 C1 C3 N7 178.409
C2 C1 C3 112.370 C2 C1 H4 108.997
C2 C1 H5 108.997 C3 C1 H4 108.997
C3 C1 H5 108.997 H4 C1 H5 108.406
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.539      
2 C -0.131      
3 C -0.131      
4 H 0.151      
5 H 0.151      
6 N -0.289      
7 N -0.289      


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 4.091 4.091
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.133 0.000 0.000
y 0.000 -43.884 0.000
z 0.000 0.000 -27.175
Traceless
 xyz
x 8.397 0.000 0.000
y 0.000 -16.730 0.000
z 0.000 0.000 8.333
Polar
3z2-r216.667
x2-y216.751
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.475 0.000 0.000
y 0.000 7.864 0.000
z 0.000 0.000 5.496


<r2> (average value of r2) Å2
<r2> 119.255
(<r2>)1/2 10.920