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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G
 hartrees
Energy at 0K-224.047163
Energy at 298.15K-224.048551
HF Energy-223.518444
Nuclear repulsion energy121.939069
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 MP2=FULL/6-31G
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 3073 2919 0.15      
2 A1 2104 1999 2.79      
3 A1 1536 1459 14.40      
4 A1 874 830 7.52      
5 A1 541 514 0.03      
6 A1 131 125 8.86      
7 A2 1280 1216 0.00      
8 A2 301 286 0.00      
9 B1 3117 2961 0.13      
10 B1 996 946 0.01      
11 B1 279 265 0.02      
12 B2 2110 2004 9.41      
13 B2 1398 1328 0.35      
14 B2 973 925 6.85      
15 B2 304 289 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 9507.7 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 9033.2 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 MP2=FULL/6-31G
ABC
0.67478 0.09340 0.08332

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.852
C2 0.000 1.234 0.028
C3 0.000 -1.234 0.028
H4 0.885 0.000 1.506
H5 -0.885 0.000 1.506
N6 0.000 2.255 -0.604
N7 0.000 -2.255 -0.604

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.48401.48401.10031.10032.68422.6842
C21.48402.46832.11922.11921.20063.5456
C31.48402.46832.11922.11923.54561.2006
H41.10032.11922.11921.76953.21273.2127
H51.10032.11922.11921.76953.21273.2127
N62.68421.20063.54563.21273.21274.5092
N72.68423.54561.20063.21273.21274.5092

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.061 C1 C3 N7 178.061
C2 C1 C3 112.534 C2 C1 H4 109.278
C2 C1 H5 109.278 C3 C1 H4 109.278
C3 C1 H5 109.278 H4 C1 H5 107.041
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2=FULL/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.297      
2 C 0.172      
3 C 0.172      
4 H 0.288      
5 H 0.288      
6 N -0.312      
7 N -0.312      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000