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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B1B95/6-31+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 B1B95/6-31+G**
 hartrees
Energy at 0K-224.901497
Energy at 298.15K-224.903153
Nuclear repulsion energy124.804020
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 B1B95/6-31+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 3079 2945 1.25      
2 A1 2404 2299 0.71      
3 A1 1439 1377 15.45      
4 A1 911 872 5.74      
5 A1 581 556 0.13      
6 A1 144 138 10.61      
7 A2 1236 1182 0.00      
8 A2 373 357 0.00      
9 B1 3127 2991 5.03      
10 B1 927 887 0.37      
11 B1 338 324 0.09      
12 B2 2400 2296 3.35      
13 B2 1338 1280 3.63      
14 B2 1003 959 6.22      
15 B2 370 354 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 9834.8 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 9407.9 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 B1B95/6-31+G**
ABC
0.70506 0.09755 0.08708

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.832
C2 0.000 1.219 0.024
C3 0.000 -1.219 0.024
H4 0.882 0.000 1.481
H5 -0.882 0.000 1.481
N6 0.000 2.200 -0.589
N7 0.000 -2.200 -0.589

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46261.46261.09481.09482.61962.6196
C21.46262.43812.09432.09431.15733.4739
C31.46262.43812.09432.09433.47391.1573
H41.09482.09432.09431.76393.14723.1472
H51.09482.09432.09431.76393.14723.1472
N62.61961.15733.47393.14723.14724.4006
N72.61963.47391.15733.14723.14724.4006

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.474 C1 C3 N7 178.474
C2 C1 C3 112.918 C2 C1 H4 109.109
C2 C1 H5 109.109 C3 C1 H4 109.109
C3 C1 H5 109.109 H4 C1 H5 107.335
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.255      
2 C 0.292      
3 C 0.292      
4 H 0.252      
5 H 0.252      
6 N -0.416      
7 N -0.416      


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 3.877 3.877
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.886 0.000 0.000
y 0.000 -42.708 0.000
z 0.000 0.000 -26.809
Traceless
 xyz
x 7.872 0.000 0.000
y 0.000 -15.860 0.000
z 0.000 0.000 7.988
Polar
3z2-r215.976
x2-y215.821
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.004 0.000 0.000
y 0.000 8.162 0.000
z 0.000 0.000 5.296


<r2> (average value of r2) Å2
<r2> 120.648
(<r2>)1/2 10.984