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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-224.354492
Energy at 298.15K-224.356131
HF Energy-223.642381
Nuclear repulsion energy124.217695
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 CCD/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 3148 2951 0.00      
2 A1 2396 2246 0.11      
3 A1 1514 1420 9.33      
4 A1 921 864 7.00      
5 A1 582 545 0.32      
6 A1 145 136 10.66      
7 A2 1279 1199 0.00      
8 A2 358 335 0.00      
9 B1 3199 3000 0.82      
10 B1 973 912 0.09      
11 B1 331 311 0.64      
12 B2 2397 2247 0.68      
13 B2 1393 1307 4.64      
14 B2 1015 951 8.03      
15 B2 358 335 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 10003.5 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9379.2 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 CCD/6-31G**
ABC
0.68554 0.09715 0.08646

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.848
C2 0.000 1.223 0.026
C3 0.000 -1.223 0.026
H4 0.881 0.000 1.491
H5 -0.881 0.000 1.491
N6 0.000 2.204 -0.598
N7 0.000 -2.204 -0.598

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47361.47361.09041.09042.63652.6365
C21.47362.44562.10182.10181.16313.4834
C31.47362.44562.10182.10183.48341.1631
H41.09042.10182.10181.76203.16223.1622
H51.09042.10182.10181.76203.16223.1622
N62.63651.16313.48343.16223.16224.4084
N72.63653.48341.16313.16223.16224.4084

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.535 C1 C3 N7 178.535
C2 C1 C3 112.153 C2 C1 H4 109.200
C2 C1 H5 109.200 C3 C1 H4 109.200
C3 C1 H5 109.200 H4 C1 H5 107.788
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CCD/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.258      
2 C 0.313      
3 C 0.313      
4 H 0.241      
5 H 0.241      
6 N -0.424      
7 N -0.424      


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> 121.504
(<r2>)1/2 11.023