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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP2=FULL/STO-3G

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/STO-3G
 hartrees
Energy at 0K-221.180565
Energy at 298.15K-221.181928
HF Energy-220.776966
Nuclear repulsion energy119.652144
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/STO-3G
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 3393 3016 2.06      
2 A1 2103 1869 20.81      
3 A1 1648 1465 2.58      
4 A1 918 816 2.24      
5 A1 577 513 0.27      
6 A1 141 126 5.51      
7 A2 1347 1197 0.00      
8 A2 344 305 0.00      
9 B1 3497 3108 4.67      
10 B1 1038 922 0.20      
11 B1 324 288 0.25      
12 B2 2110 1876 70.15      
13 B2 1460 1297 5.18      
14 B2 997 886 1.22      
15 B2 353 314 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 10124.9 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 9000.0 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 MP2=FULL/STO-3G
ABC
0.61307 0.09167 0.08099

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.896
C2 0.000 1.252 0.042
C3 0.000 -1.252 0.042
H4 0.899 0.000 1.548
H5 -0.899 0.000 1.548
N6 0.000 2.273 -0.641
N7 0.000 -2.273 -0.641

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.51531.51531.11131.11132.74332.7433
C21.51532.50422.15542.15541.22813.5903
C31.51532.50422.15542.15543.59031.2281
H41.11132.15542.15541.79873.28143.2814
H51.11132.15542.15541.79873.28143.2814
N62.74331.22813.59033.28143.28144.5452
N72.74333.59031.22813.28143.28144.5452

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.525 C1 C3 N7 179.525
C2 C1 C3 111.444 C2 C1 H4 109.322
C2 C1 H5 109.322 C3 C1 H4 109.322
C3 C1 H5 109.322 H4 C1 H5 108.043
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2=FULL/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.085      
2 C 0.066      
3 C 0.066      
4 H 0.126      
5 H 0.126      
6 N -0.149      
7 N -0.149      


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> 126.615
(<r2>)1/2 11.252