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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP2=FULL/3-21G

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/3-21G
 hartrees
Energy at 0K-222.901290
Energy at 298.15K-222.903158
HF Energy-222.380512
Nuclear repulsion energy122.949230
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/3-21G
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 3096 2956 0.07      
2 A1 2147 2050 4.53      
3 A1 1552 1482 16.24      
4 A1 887 847 6.38      
5 A1 600 573 0.03      
6 A1 166 159 6.96      
7 A2 1340 1279 0.00      
8 A2 419 400 0.00      
9 B1 3137 2995 1.26      
10 B1 1003 958 0.11      
11 B1 389 371 0.35      
12 B2 2149 2052 11.89      
13 B2 1412 1349 0.14      
14 B2 962 918 6.68      
15 B2 419 400 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 9838.8 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 9394.0 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 MP2=FULL/3-21G
ABC
0.65738 0.09622 0.08528

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.863
C2 0.000 1.224 0.036
C3 0.000 -1.224 0.036
H4 0.887 0.000 1.510
H5 -0.887 0.000 1.510
N6 0.000 2.217 -0.616
N7 0.000 -2.217 -0.616

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47771.47771.09771.09772.66512.6651
C21.47772.44862.11162.11161.18743.5024
C31.47772.44862.11162.11163.50241.1874
H41.09772.11162.11161.77423.19703.1970
H51.09772.11162.11161.77423.19703.1970
N62.66511.18743.50243.19703.19704.4338
N72.66513.50241.18743.19703.19704.4338

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.230 C1 C3 N7 179.230
C2 C1 C3 111.889 C2 C1 H4 109.259
C2 C1 H5 109.259 C3 C1 H4 109.259
C3 C1 H5 109.259 H4 C1 H5 107.827
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2=FULL/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.477      
2 C 0.365      
3 C 0.365      
4 H 0.337      
5 H 0.337      
6 N -0.464      
7 N -0.464      


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> 123.155
(<r2>)1/2 11.098