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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-224.898370
Energy at 298.15K-224.900056
Nuclear repulsion energy124.522635
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 B3PW91/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3062 2955 0.67      
2 A1 2391 2307 0.80      
3 A1 1409 1359 14.97      
4 A1 914 882 4.45      
5 A1 586 565 0.17      
6 A1 147 142 9.29      
7 A2 1223 1180 0.00      
8 A2 377 364 0.00      
9 B1 3112 3003 4.47      
10 B1 918 886 0.65      
11 B1 343 331 0.06      
12 B2 2387 2303 2.51      
13 B2 1324 1278 4.22      
14 B2 1005 970 5.12      
15 B2 377 363 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 9786.5 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9444.0 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 B3PW91/cc-pVDZ
ABC
0.70000 0.09724 0.08678

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.834
C2 0.000 1.221 0.026
C3 0.000 -1.221 0.026
H4 0.888 0.000 1.488
H5 -0.888 0.000 1.488
N6 0.000 2.203 -0.592
N7 0.000 -2.203 -0.592

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46441.46441.10281.10282.62432.6243
C21.46442.44282.10192.10191.16003.4800
C31.46442.44282.10192.10193.48001.1600
H41.10282.10192.10191.77523.15733.1573
H51.10282.10192.10191.77523.15733.1573
N62.62431.16003.48003.15733.15734.4068
N72.62433.48001.16003.15733.15734.4068

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.684 C1 C3 N7 178.684
C2 C1 C3 113.038 C2 C1 H4 109.110
C2 C1 H5 109.110 C3 C1 H4 109.110
C3 C1 H5 109.110 H4 C1 H5 107.195
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.021      
2 C -0.043      
3 C -0.043      
4 H 0.141      
5 H 0.141      
6 N -0.108      
7 N -0.108      


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 3.655 3.655
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.401 0.000 0.000
y 0.000 -41.081 0.000
z 0.000 0.000 -26.268
Traceless
 xyz
x 7.273 0.000 0.000
y 0.000 -14.746 0.000
z 0.000 0.000 7.473
Polar
3z2-r214.946
x2-y214.680
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.477 0.000 0.000
y 0.000 7.310 0.000
z 0.000 0.000 4.745


<r2> (average value of r2) Å2
<r2> 119.772
(<r2>)1/2 10.944