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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-224.332040
Energy at 298.15K-224.333612
HF Energy-223.632337
Nuclear repulsion energy123.637539
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 MP2/6-31G*
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 3118 2940 0.52      
2 A1 2218 2091 1.59      
3 A1 1512 1426 12.65      
4 A1 915 863 5.19      
5 A1 572 539 0.18      
6 A1 141 132 10.08      
7 A2 1272 1199 0.00      
8 A2 346 326 0.00      
9 B1 3170 2990 2.56      
10 B1 968 913 0.47      
11 B1 320 302 0.29      
12 B2 2223 2096 6.10      
13 B2 1379 1301 1.80      
14 B2 1005 948 5.65      
15 B2 348 328 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 9752.5 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 9196.6 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 MP2/6-31G*
ABC
0.67278 0.09697 0.08612

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.851
C2 0.000 1.217 0.028
C3 0.000 -1.217 0.028
H4 0.884 0.000 1.496
H5 -0.884 0.000 1.496
N6 0.000 2.206 -0.603
N7 0.000 -2.206 -0.603

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46861.46861.09431.09432.64152.6415
C21.46862.43342.10132.10131.17313.4801
C31.46862.43342.10132.10133.48011.1731
H41.09432.10132.10131.76803.17023.1702
H51.09432.10132.10131.76803.17023.1702
N62.64151.17313.48013.17023.17024.4114
N72.64153.48011.17313.17023.17024.4114

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.474 C1 C3 N7 178.474
C2 C1 C3 111.883 C2 C1 H4 109.276
C2 C1 H5 109.276 C3 C1 H4 109.276
C3 C1 H5 109.276 H4 C1 H5 107.763
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability