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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-224.369162
Energy at 298.15K-224.370780
HF Energy-223.636413
Nuclear repulsion energy123.848721
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/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 3149 2943 0.12      
2 A1 2226 2080 1.61      
3 A1 1506 1407 10.34      
4 A1 917 857 5.07      
5 A1 575 538 0.21      
6 A1 143 134 10.05      
7 A2 1273 1190 0.00      
8 A2 355 331 0.00      
9 B1 3207 2996 1.94      
10 B1 962 899 0.25      
11 B1 329 307 0.39      
12 B2 2232 2086 6.22      
13 B2 1378 1287 2.98      
14 B2 1007 941 4.86      
15 B2 357 333 0.55      

Unscaled Zero Point Vibrational Energy (zpe) 9807.6 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 9164.2 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 MP2=FULL/6-31G**
ABC
0.67702 0.09718 0.08634

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.851
C2 0.000 1.215 0.031
C3 0.000 -1.215 0.031
H4 0.880 0.000 1.495
H5 -0.880 0.000 1.495
N6 0.000 2.207 -0.605
N7 0.000 -2.207 -0.605

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46591.46591.08991.08992.64452.6445
C21.46592.43032.09582.09581.17883.4813
C31.46592.43032.09582.09583.48131.1788
H41.08992.09582.09581.75933.17113.1711
H51.08992.09582.09581.75933.17113.1711
N62.64451.17883.48133.17113.17114.4149
N72.64453.48131.17883.17113.17114.4149

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.656 C1 C3 N7 178.656
C2 C1 C3 111.977 C2 C1 H4 109.285
C2 C1 H5 109.285 C3 C1 H4 109.285
C3 C1 H5 109.285 H4 C1 H5 107.622
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2=FULL/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.259      
2 C 0.313      
3 C 0.313      
4 H 0.242      
5 H 0.242      
6 N -0.426      
7 N -0.426      


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> 120.958
(<r2>)1/2 10.998