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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: PBEPBE/cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-224.785116
Energy at 298.15K-224.786696
Nuclear repulsion energy124.450476
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-pVTZ
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 2972 2952 0.65      
2 A1 2293 2277 0.22      
3 A1 1386 1376 14.61      
4 A1 881 875 3.41      
5 A1 568 564 0.13      
6 A1 139 138 9.73      
7 A2 1196 1188 0.00      
8 A2 357 355 0.00      
9 B1 3007 2986 3.67      
10 B1 895 889 0.41      
11 B1 325 323 0.12      
12 B2 2287 2271 1.42      
13 B2 1284 1275 2.28      
14 B2 968 961 2.69      
15 B2 358 356 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 9457.7 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 9392.5 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 PBEPBE/cc-pVTZ
ABC
0.70100 0.09706 0.08664

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.833
C2 0.000 1.222 0.025
C3 0.000 -1.222 0.025
H4 0.886 0.000 1.488
H5 -0.886 0.000 1.488
N6 0.000 2.206 -0.591
N7 0.000 -2.206 -0.591

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46451.46451.10231.10232.62572.6257
C21.46452.44362.10192.10191.16143.4827
C31.46452.44362.10192.10193.48271.1614
H41.10232.10192.10191.77263.15843.1584
H51.10232.10192.10191.77263.15843.1584
N62.62571.16143.48273.15843.15844.4117
N72.62573.48271.16143.15843.15844.4117

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.622 C1 C3 N7 178.622
C2 C1 C3 113.084 C2 C1 H4 109.135
C2 C1 H5 109.135 C3 C1 H4 109.135
C3 C1 H5 109.135 H4 C1 H5 107.039
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.100      
2 C -0.094      
3 C -0.094      
4 H 0.159      
5 H 0.159      
6 N -0.016      
7 N -0.016      


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 3.713 3.713
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.792 0.000 0.000
y 0.000 -41.969 0.000
z 0.000 0.000 -26.731
Traceless
 xyz
x 7.558 0.000 0.000
y 0.000 -15.208 0.000
z 0.000 0.000 7.650
Polar
3z2-r215.299
x2-y215.177
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.161 0.000 0.000
y 0.000 8.238 0.000
z 0.000 0.000 5.442


<r2> (average value of r2) Å2
<r2> 120.980
(<r2>)1/2 10.999