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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: PBEPBE/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-224.722746
Energy at 298.15K-224.724332
Nuclear repulsion energy123.652717
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2978 2960 0.41      
2 A1 2296 2283 0.35      
3 A1 1357 1349 14.52      
4 A1 887 882 3.51      
5 A1 566 562 0.01      
6 A1 140 139 7.99      
7 A2 1179 1172 0.00      
8 A2 362 360 0.00      
9 B1 3022 3005 3.62      
10 B1 883 878 0.52      
11 B1 330 328 0.00      
12 B2 2291 2278 1.35      
13 B2 1272 1264 3.19      
14 B2 976 971 2.91      
15 B2 362 359 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 9450.5 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 9395.7 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/cc-pVDZ
ABC
0.68933 0.09608 0.08571

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.838
C2 0.000 1.226 0.028
C3 0.000 -1.226 0.028
H4 0.893 0.000 1.499
H5 -0.893 0.000 1.499
N6 0.000 2.218 -0.598
N7 0.000 -2.218 -0.598

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46941.46941.11161.11162.64192.6419
C21.46942.45252.11332.11331.17263.5004
C31.46942.45252.11332.11333.50041.1726
H41.11162.11332.11331.78673.18033.1803
H51.11162.11332.11331.78673.18033.1803
N62.64191.17263.50043.18033.18034.4355
N72.64193.50041.17263.18033.18034.4355

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.827 C1 C3 N7 178.827
C2 C1 C3 113.126 C2 C1 H4 109.141
C2 C1 H5 109.141 C3 C1 H4 109.141
C3 C1 H5 109.141 H4 C1 H5 106.966
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.029      
2 C -0.056      
3 C -0.056      
4 H 0.128      
5 H 0.128      
6 N -0.086      
7 N -0.086      


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 3.534 3.534
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.498 0.000 0.000
y 0.000 -40.669 0.000
z 0.000 0.000 -26.323
Traceless
 xyz
x 6.999 0.000 0.000
y 0.000 -14.259 0.000
z 0.000 0.000 7.261
Polar
3z2-r214.521
x2-y214.172
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.552 0.000 0.000
y 0.000 7.621 0.000
z 0.000 0.000 4.893


<r2> (average value of r2) Å2
<r2> 121.684
(<r2>)1/2 11.031