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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-222.817826
Energy at 298.15K-222.819841
Nuclear repulsion energy124.659817
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 CID/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 3144 2929 0.21      
2 A1 2452 2284 0.06      
3 A1 1569 1462 19.17      
4 A1 930 866 9.20      
5 A1 635 592 0.36      
6 A1 176 164 8.18      
7 A2 1369 1275 0.00      
8 A2 452 421 0.00      
9 B1 3181 2964 1.89      
10 B1 1030 960 0.16      
11 B1 415 387 0.12      
12 B2 2445 2278 0.21      
13 B2 1450 1350 0.08      
14 B2 1008 939 14.65      
15 B2 450 419 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 10352.9 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 9644.8 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 CID/3-21G
ABC
0.67549 0.09851 0.08738

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.853
C2 0.000 1.220 0.030
C3 0.000 -1.220 0.030
H4 0.884 0.000 1.496
H5 -0.884 0.000 1.496
N6 0.000 2.186 -0.605
N7 0.000 -2.186 -0.605

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47151.47151.09351.09352.62782.6278
C21.47152.43902.10242.10241.15643.4643
C31.47152.43902.10242.10243.46431.1564
H41.09352.10242.10241.76843.15863.1586
H51.09352.10242.10241.76843.15863.1586
N62.62781.15643.46433.15863.15864.3724
N72.62783.46431.15643.15863.15864.3724

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.255 C1 C3 N7 179.255
C2 C1 C3 111.947 C2 C1 H4 109.221
C2 C1 H5 109.221 C3 C1 H4 109.221
C3 C1 H5 109.221 H4 C1 H5 107.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CID/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.479      
2 C 0.372      
3 C 0.372      
4 H 0.336      
5 H 0.336      
6 N -0.468      
7 N -0.468      


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> 120.607
(<r2>)1/2 10.982