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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP2=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-224.381695
Energy at 298.15K-224.383261
HF Energy-223.642087
Nuclear repulsion energy123.742631
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/6-31+G**
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 3145 2953 0.31      
2 A1 2213 2079 1.21      
3 A1 1498 1407 11.15      
4 A1 913 857 6.64      
5 A1 571 536 0.02      
6 A1 142 133 10.18      
7 A2 1266 1189 0.00      
8 A2 339 319 0.00      
9 B1 3203 3009 3.26      
10 B1 955 897 0.00      
11 B1 314 295 0.05      
12 B2 2219 2084 4.43      
13 B2 1372 1288 4.47      
14 B2 1003 942 5.55      
15 B2 345 324 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 9748.1 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 9155.5 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/6-31+G**
ABC
0.68273 0.09670 0.08606

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.849
C2 0.000 1.216 0.029
C3 0.000 -1.216 0.029
H4 0.881 0.000 1.491
H5 -0.881 0.000 1.491
N6 0.000 2.214 -0.601
N7 0.000 -2.214 -0.601

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46681.46681.09011.09012.64632.6463
C21.46682.43242.09592.09591.17983.4873
C31.46682.43242.09592.09593.48731.1798
H41.09012.09592.09591.76223.17063.1706
H51.09012.09592.09591.76223.17063.1706
N62.64631.17983.48733.17063.17064.4277
N72.64633.48731.17983.17063.17064.4277

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.266 C1 C3 N7 178.266
C2 C1 C3 112.016 C2 C1 H4 109.221
C2 C1 H5 109.221 C3 C1 H4 109.221
C3 C1 H5 109.221 H4 C1 H5 107.848
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2=FULL/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.016      
2 C 0.116      
3 C 0.116      
4 H 0.241      
5 H 0.241      
6 N -0.350      
7 N -0.350      


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> 121.526
(<r2>)1/2 11.024