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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-37.897910
Energy at 298.15K-37.899477
Nuclear repulsion energy61.117212
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 B3LYP/CEP-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 3079 2974 0.14      
2 A1 2368 2287 0.86      
3 A1 1452 1402 12.47      
4 A1 891 860 9.38      
5 A1 564 545 0.00      
6 A1 142 137 8.87      
7 A2 1238 1196 0.00      
8 A2 356 344 0.00      
9 B1 3133 3026 0.17      
10 B1 915 884 0.09      
11 B1 327 316 0.12      
12 B2 2363 2282 4.63      
13 B2 1331 1286 7.45      
14 B2 975 942 9.98      
15 B2 358 346 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 9746.5 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 9412.2 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 B3LYP/CEP-31G*
ABC
0.66550 0.09518 0.08462

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.861
C2 0.000 1.236 0.028
C3 0.000 -1.236 0.028
H4 0.893 0.000 1.507
H5 -0.893 0.000 1.507
N6 0.000 2.226 -0.608
N7 0.000 -2.226 -0.608

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.49071.49071.10201.10202.66772.6677
C21.49072.47232.12442.12441.17713.5206
C31.49072.47232.12442.12443.52061.1771
H41.10202.12442.12441.78563.19833.1983
H51.10202.12442.12441.78563.19833.1983
N62.66771.17713.52063.19833.19834.4529
N72.66773.52061.17713.19833.19834.4529

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.742 C1 C3 N7 178.742
C2 C1 C3 112.039 C2 C1 H4 109.125
C2 C1 H5 109.125 C3 C1 H4 109.125
C3 C1 H5 109.125 H4 C1 H5 108.227
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.117      
2 C -0.562      
3 C -0.562      
4 H 0.210      
5 H 0.210      
6 N 0.411      
7 N 0.411      


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 3.874 3.874
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.575 0.000 0.000
y 0.000 -41.965 0.000
z 0.000 0.000 -26.453
Traceless
 xyz
x 7.634 0.000 0.000
y 0.000 -15.451 0.000
z 0.000 0.000 7.817
Polar
3z2-r215.634
x2-y215.389
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.586 0.000 0.000
y 0.000 7.693 0.000
z 0.000 0.000 4.979


<r2> (average value of r2) Å2
<r2> 93.914
(<r2>)1/2 9.691