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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-224.425106
Energy at 298.15K-224.426768
HF Energy-223.687553
Nuclear repulsion energy124.254551
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 QCISD/6-311G*
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 3083 2952 0.00      
2 A1 2347 2247 0.07      
3 A1 1497 1433 13.53      
4 A1 908 870 7.04      
5 A1 584 559 0.24      
6 A1 148 141 10.23      
7 A2 1278 1223 0.00      
8 A2 365 349 0.00      
9 B1 3129 2995 0.93      
10 B1 960 919 0.12      
11 B1 337 322 0.17      
12 B2 2348 2248 0.43      
13 B2 1377 1318 2.49      
14 B2 999 957 9.02      
15 B2 367 351 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 9862.0 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 9441.9 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 QCISD/6-311G*
ABC
0.68510 0.09720 0.08650

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.848
C2 0.000 1.225 0.025
C3 0.000 -1.225 0.025
H4 0.885 0.000 1.494
H5 -0.885 0.000 1.494
N6 0.000 2.203 -0.598
N7 0.000 -2.203 -0.598

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47501.47501.09591.09592.63472.6347
C21.47502.44922.10722.10721.15993.4834
C31.47502.44922.10722.10723.48341.1599
H41.09592.10722.10721.76953.16433.1643
H51.09592.10722.10721.76953.16433.1643
N62.63471.15993.48343.16433.16434.4051
N72.63473.48341.15993.16433.16434.4051

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.644 C1 C3 N7 178.644
C2 C1 C3 112.241 C2 C1 H4 109.207
C2 C1 H5 109.207 C3 C1 H4 109.207
C3 C1 H5 109.207 H4 C1 H5 107.665
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at QCISD/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.423      
2 C 0.189      
3 C 0.189      
4 H 0.321      
5 H 0.321      
6 N -0.298      
7 N -0.298      


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