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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP2=FULL/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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-224.503690
Energy at 298.15K-224.505332
HF Energy-223.682820
Nuclear repulsion energy124.127094
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/6-311G*
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 3110 2946 0.23      
2 A1 2211 2095 1.65      
3 A1 1497 1418 15.34      
4 A1 913 865 5.24      
5 A1 581 551 0.14      
6 A1 145 137 9.58      
7 A2 1280 1213 0.00      
8 A2 359 340 0.00      
9 B1 3162 2995 2.71      
10 B1 955 905 0.32      
11 B1 331 314 0.04      
12 B2 2217 2100 6.14      
13 B2 1369 1297 1.14      
14 B2 1002 949 6.02      
15 B2 365 346 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 9749.2 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 9233.5 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/6-311G*
ABC
0.67588 0.09775 0.08678

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

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 0.882 0.000 1.498
H5 -0.882 0.000 1.498
N6 0.000 2.199 -0.605
N7 0.000 -2.199 -0.605

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46561.46561.09371.09372.63802.6380
C21.46562.42952.09892.09891.17253.4729
C31.46562.42952.09892.09893.47291.1725
H41.09372.09892.09891.76383.16863.1686
H51.09372.09892.09891.76383.16863.1686
N62.63801.17253.47293.16863.16864.3987
N72.63803.47291.17253.16863.16864.3987

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.860 C1 C3 N7 178.860
C2 C1 C3 111.952 C2 C1 H4 109.326
C2 C1 H5 109.326 C3 C1 H4 109.326
C3 C1 H5 109.326 H4 C1 H5 107.479
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2=FULL/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.420      
2 C 0.185      
3 C 0.185      
4 H 0.322      
5 H 0.322      
6 N -0.297      
7 N -0.297      


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> 120.722
(<r2>)1/2 10.987