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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-224.706747
Energy at 298.15K-224.708321
HF Energy-224.706747
Nuclear repulsion energy123.735177
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 PBEPBEultrafine/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 2984 2935 0.34      
2 A1 2304 2266 0.21      
3 A1 1417 1394 14.21      
4 A1 887 872 3.59      
5 A1 565 555 0.11      
6 A1 140 137 8.92      
7 A2 1209 1189 0.00      
8 A2 363 357 0.00      
9 B1 3023 2973 2.13      
10 B1 912 897 1.22      
11 B1 333 327 0.08      
12 B2 2298 2260 0.99      
13 B2 1305 1283 1.96      
14 B2 973 957 3.71      
15 B2 361 355 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 9537.0 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 9379.7 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 PBEPBEultrafine/6-31G*
ABC
0.68306 0.09649 0.08592

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.843
C2 0.000 1.225 0.030
C3 0.000 -1.225 0.030
H4 0.888 0.000 1.503
H5 -0.888 0.000 1.503
N6 0.000 2.212 -0.601
N7 0.000 -2.212 -0.601

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47041.47041.10661.10662.64202.6420
C21.47042.45062.11192.11191.17173.4952
C31.47042.45062.11192.11193.49521.1717
H41.10662.11192.11191.77653.17983.1798
H51.10662.11192.11191.77653.17983.1798
N62.64201.17173.49523.17983.17984.4248
N72.64203.49521.17173.17983.17984.4248

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.038 C1 C3 N7 179.038
C2 C1 C3 112.880 C2 C1 H4 109.252
C2 C1 H5 109.252 C3 C1 H4 109.252
C3 C1 H5 109.252 H4 C1 H5 106.769
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.457      
2 C 0.389      
3 C 0.389      
4 H 0.265      
5 H 0.265      
6 N -0.426      
7 N -0.426      


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 3.642 3.642
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.309 0.000 0.000
y 0.000 -40.995 -0.003
z 0.000 -0.003 -26.245
Traceless
 xyz
x 7.310 0.000 0.000
y 0.000 -14.718 -0.003
z 0.000 -0.003 7.407
Polar
3z2-r214.815
x2-y214.686
xy0.000
xz0.000
yz-0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.372 0.000 0.000
y 0.000 7.541 0.003
z 0.000 0.003 4.756


<r2> (average value of r2) Å2
<r2> 121.450
(<r2>)1/2 11.020