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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: TPSSh/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 TPSSh/6-31+G**
 hartrees
Energy at 0K-224.995722
Energy at 298.15K-224.997344
HF Energy-224.995722
Nuclear repulsion energy124.219061
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 TPSSh/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 3061 2946 0.36      
2 A1 2355 2266 0.30      
3 A1 1459 1405 12.48      
4 A1 896 863 7.00      
5 A1 574 552 0.02      
6 A1 142 137 10.12      
7 A2 1242 1196 0.00      
8 A2 365 351 0.00      
9 B1 3107 2990 2.67      
10 B1 936 901 0.03      
11 B1 334 321 0.03      
12 B2 2349 2261 2.09      
13 B2 1338 1287 5.12      
14 B2 983 946 6.96      
15 B2 363 350 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 9751.3 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 9385.6 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 TPSSh/6-31+G**
ABC
0.69416 0.09682 0.08634

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.843
C2 0.000 1.223 0.025
C3 0.000 -1.223 0.025
H4 0.886 0.000 1.487
H5 -0.886 0.000 1.487
N6 0.000 2.204 -0.595
N7 0.000 -2.204 -0.595

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47141.47141.09521.09522.63202.6320
C21.47142.44582.10202.10201.16093.4827
C31.47142.44582.10202.10203.48271.1609
H41.09522.10202.10201.77123.15923.1592
H51.09522.10202.10201.77123.15923.1592
N62.63201.16093.48273.15923.15924.4083
N72.63203.48271.16093.15923.15924.4083

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.514 C1 C3 N7 178.514
C2 C1 C3 112.431 C2 C1 H4 109.095
C2 C1 H5 109.095 C3 C1 H4 109.095
C3 C1 H5 109.095 H4 C1 H5 107.925
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.229      
2 C 0.255      
3 C 0.255      
4 H 0.249      
5 H 0.249      
6 N -0.390      
7 N -0.390      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 3.872 3.872
CHELPG        
AIM        
ESP        


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 4.055 0.000 0.000
y 0.000 8.327 0.000
z 0.000 0.000 5.377


<r2> (average value of r2) Å2
<r2> 121.544
(<r2>)1/2 11.025