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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: PBEPBE/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 PBEPBE/6-31G
 hartrees
Energy at 0K-224.642466
Energy at 298.15K-224.644060
Nuclear repulsion energy123.132007
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 PBEPBE/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 2982 2940 0.10      
2 A1 2254 2223 0.23      
3 A1 1445 1425 22.33      
4 A1 881 869 5.32      
5 A1 569 561 0.05      
6 A1 142 140 7.70      
7 A2 1235 1218 0.00      
8 A2 362 357 0.00      
9 B1 3022 2981 1.47      
10 B1 939 926 0.73      
11 B1 331 327 0.33      
12 B2 2249 2218 1.56      
13 B2 1330 1311 0.03      
14 B2 983 969 5.85      
15 B2 353 348 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9538.2 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 9406.6 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 PBEPBE/6-31G
ABC
0.68717 0.09518 0.08494

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.838
C2 0.000 1.229 0.031
C3 0.000 -1.229 0.031
H4 0.887 0.000 1.502
H5 -0.887 0.000 1.502
N6 0.000 2.230 -0.600
N7 0.000 -2.230 -0.600

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47071.47071.10751.10752.65342.6534
C21.47072.45872.11212.11211.18293.5163
C31.47072.45872.11212.11213.51631.1829
H41.10752.11212.11211.77343.19003.1900
H51.10752.11212.11211.77343.19003.1900
N62.65341.18293.51633.19003.19004.4598
N72.65343.51631.18293.19003.19004.4598

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.944 C1 C3 N7 178.944
C2 C1 C3 113.419 C2 C1 H4 109.202
C2 C1 H5 109.202 C3 C1 H4 109.202
C3 C1 H5 109.202 H4 C1 H5 106.373
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.402      
2 C 0.187      
3 C 0.187      
4 H 0.265      
5 H 0.265      
6 N -0.251      
7 N -0.251      


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 3.702 3.702
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.501 0.000 0.000
y 0.000 -42.043 0.000
z 0.000 0.000 -26.583
Traceless
 xyz
x 7.812 0.000 0.000
y 0.000 -15.501 0.000
z 0.000 0.000 7.689
Polar
3z2-r215.378
x2-y215.542
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.200 0.000 0.000
y 0.000 7.488 0.000
z 0.000 0.000 4.603


<r2> (average value of r2) Å2
<r2> 122.821
(<r2>)1/2 11.082