return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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-224.037453
Energy at 298.15K-224.038909
HF Energy-223.526706
Nuclear repulsion energy122.706750
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 3037 2914 0.55      
2 A1 2294 2201 0.24      
3 A1 1523 1462 14.77      
4 A1 884 848 9.39      
5 A1 552 530 0.00      
6 A1 136 130 9.54      
7 A2 1275 1223 0.00      
8 A2 316 303 0.00      
9 B1 3074 2950 0.00      
10 B1 991 951 0.00      
11 B1 294 282 0.01      
12 B2 2295 2202 0.97      
13 B2 1396 1340 0.42      
14 B2 990 950 11.36      
15 B2 314 301 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 9685.2 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 9293.0 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 CCD/6-31G
ABC
0.68081 0.09435 0.08418

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 0.849
C2 0.000 1.237 0.025
C3 0.000 -1.237 0.025
H4 0.887 0.000 1.505
H5 -0.887 0.000 1.505
N6 0.000 2.239 -0.600
N7 0.000 -2.239 -0.600

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.48671.48671.10341.10342.66652.6665
C21.48672.47492.12342.12341.18013.5317
C31.48672.47492.12342.12343.53171.1801
H41.10342.12342.12341.77443.19833.1983
H51.10342.12342.12341.77443.19833.1983
N62.66651.18013.53173.19833.19834.4771
N72.66653.53171.18013.19833.19834.4771

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.315 C1 C3 N7 178.315
C2 C1 C3 112.683 C2 C1 H4 109.240
C2 C1 H5 109.240 C3 C1 H4 109.240
C3 C1 H5 109.240 H4 C1 H5 107.040
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 -0.297      
2 C 0.165      
3 C 0.165      
4 H 0.286      
5 H 0.286      
6 N -0.303      
7 N -0.303      


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