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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-224.709724
Energy at 298.15K-224.711413
HF Energy-224.709724
Nuclear repulsion energy124.785528
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 PBE1PBE/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 3086 2933 1.07      
2 A1 2421 2301 0.68      
3 A1 1465 1392 15.34      
4 A1 922 876 4.73      
5 A1 589 560 0.36      
6 A1 147 139 10.26      
7 A2 1255 1193 0.00      
8 A2 382 363 0.00      
9 B1 3132 2976 3.69      
10 B1 948 901 1.30      
11 B1 348 331 0.28      
12 B2 2417 2297 2.22      
13 B2 1362 1294 2.15      
14 B2 1012 962 6.42      
15 B2 379 360 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 9932.1 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 9438.5 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 PBE1PBE/6-31G*
ABC
0.69651 0.09791 0.08724

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.837
C2 0.000 1.218 0.026
C3 0.000 -1.218 0.026
H4 0.883 0.000 1.489
H5 -0.883 0.000 1.489
N6 0.000 2.195 -0.594
N7 0.000 -2.195 -0.594

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46331.46331.09731.09732.62052.6205
C21.46332.43632.09802.09801.15743.4694
C31.46332.43632.09802.09803.46941.1574
H41.09732.09802.09801.76563.15213.1521
H51.09732.09802.09801.76563.15213.1521
N62.62051.15743.46943.15213.15214.3908
N72.62053.46941.15743.15213.15214.3908

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.746 C1 C3 N7 178.746
C2 C1 C3 112.707 C2 C1 H4 109.211
C2 C1 H5 109.211 C3 C1 H4 109.211
C3 C1 H5 109.211 H4 C1 H5 107.135
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.469      
2 C 0.382      
3 C 0.382      
4 H 0.286      
5 H 0.286      
6 N -0.434      
7 N -0.434      


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 3.753 3.753
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.296 0.000 0.000
y 0.000 -41.401 0.000
z 0.000 0.000 -26.259
Traceless
 xyz
x 7.534 0.000 0.000
y 0.000 -15.123 0.000
z 0.000 0.000 7.590
Polar
3z2-r215.180
x2-y215.105
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.306 0.000 0.000
y 0.000 7.188 0.000
z 0.000 0.000 4.596


<r2> (average value of r2) Å2
<r2> 119.984
(<r2>)1/2 10.954