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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: HF/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-223.723521
Energy at 298.15K-223.725439
HF Energy-223.723521
Nuclear repulsion energy126.303069
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/daug-cc-pVTZ
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 3219 2912 0.34      
2 A1 2611 2362 1.83      
3 A1 1576 1425 10.70      
4 A1 961 869 7.92      
5 A1 637 576 2.60      
6 A1 165 149 14.82      
7 A2 1354 1224 0.00      
8 A2 419 379 0.00      
9 B1 3263 2952 2.36      
10 B1 1035 936 0.21      
11 B1 381 345 2.63      
12 B2 2609 2360 9.07      
13 B2 1469 1329 11.53      
14 B2 1042 942 15.49      
15 B2 419 379 2.12      

Unscaled Zero Point Vibrational Energy (zpe) 10578.6 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 9569.4 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/daug-cc-pVTZ
ABC
0.71746 0.09934 0.08868

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.832
C2 0.000 1.221 0.016
C3 0.000 -1.221 0.016
H4 0.876 0.000 1.466
H5 -0.876 0.000 1.466
N6 0.000 2.174 -0.580
N7 0.000 -2.174 -0.580

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46841.46841.08091.08092.59272.5927
C21.46842.44172.08782.08781.12453.4470
C31.46842.44172.08782.08783.44701.1245
H41.08092.08782.08781.75133.11143.1114
H51.08092.08782.08781.75133.11143.1114
N62.59271.12453.44703.11143.11144.3482
N72.59273.44701.12453.11143.11144.3482

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.287 C1 C3 N7 178.287
C2 C1 C3 112.491 C2 C1 H4 109.013
C2 C1 H5 109.013 C3 C1 H4 109.013
C3 C1 H5 109.013 H4 C1 H5 108.205
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.219      
2 C 0.295      
3 C 0.295      
4 H 0.592      
5 H 0.592      
6 N -0.997      
7 N -0.997      


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 4.052 4.052
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.990 0.000 0.000
y 0.000 -43.652 0.000
z 0.000 0.000 -27.046
Traceless
 xyz
x 8.359 0.000 0.000
y 0.000 -16.634 0.000
z 0.000 0.000 8.275
Polar
3z2-r216.550
x2-y216.662
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.503 0.000 0.000
y 0.000 7.774 0.000
z 0.000 0.000 5.477


<r2> (average value of r2) Å2
<r2> 119.103
(<r2>)1/2 10.913