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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-224.385251
Energy at 298.15K-224.386777
HF Energy-223.632024
Nuclear repulsion energy123.316621
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 MP4/6-31G*
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 3073 2934        
2 A1 2202 2102        
3 A1 1497 1429        
4 A1 899 859        
5 A1 561 535        
6 A1 138 132        
7 A2 1256 1199        
8 A2 341 326        
9 B1 3121 2980        
10 B1 958 914        
11 B1 313 299        
12 B2 2212 2112        
13 B2 1364 1303        
14 B2 989 944        
15 B2 339 324        

Unscaled Zero Point Vibrational Energy (zpe) 9630.8 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 9195.5 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 MP4/6-31G*
ABC
0.67266 0.09623 0.08554

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.855
C2 0.000 1.222 0.028
C3 0.000 -1.222 0.028
H4 0.887 0.000 1.504
H5 -0.887 0.000 1.504
N6 0.000 2.218 -0.606
N7 0.000 -2.218 -0.606

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47501.47501.09921.09922.65532.6553
C21.47502.44392.11112.11111.18053.4977
C31.47502.44392.11112.11113.49771.1805
H41.09922.11112.11111.77363.18673.1867
H51.09922.11112.11111.77363.18673.1867
N62.65531.18053.49773.18673.18674.4356
N72.65533.49771.18053.18673.18674.4356

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.419 C1 C3 N7 178.419
C2 C1 C3 111.876 C2 C1 H4 109.325
C2 C1 H5 109.325 C3 C1 H4 109.325
C3 C1 H5 109.325 H4 C1 H5 107.566
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP4/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.383      
2 C 0.328      
3 C 0.328      
4 H 0.289      
5 H 0.289      
6 N -0.425      
7 N -0.425      


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> 122.678
(<r2>)1/2 11.076