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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-224.331094
Energy at 298.15K-224.332732
HF Energy-223.640391
Nuclear repulsion energy124.566309
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 MP3/6-31G*
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 3129 2937 0.48      
2 A1 2468 2317 0.05      
3 A1 1515 1422 13.67      
4 A1 927 870 7.66      
5 A1 592 555 0.21      
6 A1 145 136 10.34      
7 A2 1278 1200 0.00      
8 A2 359 337 0.00      
9 B1 3175 2980 2.22      
10 B1 974 914 0.37      
11 B1 333 312 0.39      
12 B2 2464 2313 0.14      
13 B2 1395 1309 2.42      
14 B2 1021 958 9.89      
15 B2 357 335 1.19      

Unscaled Zero Point Vibrational Energy (zpe) 10065.3 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 9447.3 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 MP3/6-31G*
ABC
0.66412 0.09887 0.08746

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.858
C2 0.000 1.221 0.035
C3 0.000 -1.221 0.035
H4 0.883 0.000 1.505
H5 -0.883 0.000 1.505
N6 0.000 2.181 -0.613
N7 0.000 -2.181 -0.613

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47251.47251.09451.09452.63042.6304
C21.47252.44152.10512.10511.15783.4625
C31.47252.44152.10512.10513.46251.1578
H41.09452.10512.10511.76603.16543.1654
H51.09452.10512.10511.76603.16543.1654
N62.63041.15783.46253.16543.16544.3613
N72.63043.46251.15783.16543.16544.3613

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 180.000 C1 C3 N7 180.000
C2 C1 C3 111.996 C2 C1 H4 109.296
C2 C1 H5 109.296 C3 C1 H4 109.296
C3 C1 H5 109.296 H4 C1 H5 107.559
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability