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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-224.423662
Energy at 298.15K-224.425290
HF Energy-223.685310
Nuclear repulsion energy124.000498
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 MP2/6-311G**
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 3106 2952 0.07      
2 A1 2205 2095 1.94      
3 A1 1473 1400 11.49      
4 A1 908 863 5.30      
5 A1 578 549 0.11      
6 A1 143 136 9.34      
7 A2 1257 1194 0.00      
8 A2 354 337 0.00      
9 B1 3158 3001 2.42      
10 B1 945 898 0.05      
11 B1 328 312 0.08      
12 B2 2211 2101 6.77      
13 B2 1351 1284 2.93      
14 B2 996 946 4.92      
15 B2 361 343 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 9687.3 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 9204.9 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 MP2/6-311G**
ABC
0.67066 0.09771 0.08667

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.855
C2 0.000 1.217 0.033
C3 0.000 -1.217 0.033
H4 0.884 0.000 1.499
H5 -0.884 0.000 1.499
N6 0.000 2.199 -0.609
N7 0.000 -2.199 -0.609

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46801.46801.09441.09442.64132.6413
C21.46802.43312.10052.10051.17343.4753
C31.46802.43312.10052.10053.47531.1734
H41.09442.10052.10051.76873.17193.1719
H51.09442.10052.10051.76873.17193.1719
N62.64131.17343.47533.17193.17194.3980
N72.64133.47531.17343.17193.17194.3980

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.111 C1 C3 N7 179.111
C2 C1 C3 111.933 C2 C1 H4 109.250
C2 C1 H5 109.250 C3 C1 H4 109.250
C3 C1 H5 109.250 H4 C1 H5 107.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.042      
2 C 0.111      
3 C 0.111      
4 H 0.206      
5 H 0.206      
6 N -0.296      
7 N -0.296      


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> 121.479
(<r2>)1/2 11.022