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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-224.922708
Energy at 298.15K-224.924390
Nuclear repulsion energy124.808659
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 mPW1PW91/6-31+G**
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 3088 2939 1.43      
2 A1 2412 2296 0.77      
3 A1 1448 1378 16.19      
4 A1 917 872 5.99      
5 A1 586 558 0.14      
6 A1 147 139 10.73      
7 A2 1247 1186 0.00      
8 A2 378 360 0.00      
9 B1 3137 2986 5.43      
10 B1 936 891 0.38      
11 B1 342 326 0.08      
12 B2 2408 2292 3.62      
13 B2 1350 1285 3.26      
14 B2 1007 958 6.83      
15 B2 375 356 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 9887.3 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 9410.7 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 mPW1PW91/6-31+G**
ABC
0.70388 0.09760 0.08710

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.834
C2 0.000 1.219 0.024
C3 0.000 -1.219 0.024
H4 0.883 0.000 1.482
H5 -0.883 0.000 1.482
N6 0.000 2.200 -0.590
N7 0.000 -2.200 -0.590

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46331.46331.09511.09512.61982.6198
C21.46332.43802.09522.09521.15673.4732
C31.46332.43802.09522.09523.47321.1567
H41.09512.09522.09521.76523.14763.1476
H51.09512.09522.09521.76523.14763.1476
N62.61981.15673.47323.14763.14764.3991
N72.61983.47321.15673.14763.14764.3991

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.452 C1 C3 N7 178.452
C2 C1 C3 112.828 C2 C1 H4 109.114
C2 C1 H5 109.114 C3 C1 H4 109.114
C3 C1 H5 109.114 H4 C1 H5 107.412
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.244      
2 C 0.270      
3 C 0.270      
4 H 0.263      
5 H 0.263      
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 3.916 3.916
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.911 0.000 0.000
y 0.000 -42.818 0.000
z 0.000 0.000 -26.809
Traceless
 xyz
x 7.903 0.000 0.000
y 0.000 -15.958 0.000
z 0.000 0.000 8.055
Polar
3z2-r216.111
x2-y215.907
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.995 0.000 0.000
y 0.000 8.108 0.000
z 0.000 0.000 5.277


<r2> (average value of r2) Å2
<r2> 119.814
(<r2>)1/2 10.946