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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-223.693416
Energy at 298.15K-223.695362
Nuclear repulsion energy126.171324
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 HF/6-311G*
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 3246 2936 0.01      
2 A1 2622 2371 1.85      
3 A1 1589 1437 11.72      
4 A1 968 875 9.81      
5 A1 641 580 1.83      
6 A1 167 151 13.36      
7 A2 1371 1240 0.00      
8 A2 425 385 0.00      
9 B1 3291 2977 0.50      
10 B1 1043 943 0.17      
11 B1 387 350 1.13      
12 B2 2620 2370 5.95      
13 B2 1485 1343 8.08      
14 B2 1048 948 19.08      
15 B2 426 385 1.58      

Unscaled Zero Point Vibrational Energy (zpe) 10664.1 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 9644.6 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 HF/6-311G*
ABC
0.71019 0.09945 0.08865

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.836
C2 0.000 1.220 0.018
C3 0.000 -1.220 0.018
H4 0.875 0.000 1.472
H5 -0.875 0.000 1.472
N6 0.000 2.173 -0.584
N7 0.000 -2.173 -0.584

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46891.46891.08191.08192.59582.5958
C21.46892.44092.09012.09011.12713.4464
C31.46892.44092.09012.09013.44641.1271
H41.08192.09012.09011.74993.11713.1171
H51.08192.09012.09011.74993.11713.1171
N62.59581.12713.44643.11713.11714.3457
N72.59583.44641.12713.11713.11714.3457

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.519 C1 C3 N7 178.519
C2 C1 C3 112.377 C2 C1 H4 109.106
C2 C1 H5 109.106 C3 C1 H4 109.106
C3 C1 H5 109.106 H4 C1 H5 107.942
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.427 0.065   -0.353
2 C 0.194 0.335   0.443
3 C 0.194 0.335   0.443
4 H 0.320 0.080   0.196
5 H 0.320 0.080   0.194
6 N -0.301 -0.447   -0.462
7 N -0.301 -0.447   -0.462


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 4.011 4.011
CHELPG        
AIM        
ESP 0.008 0.000 4.135 4.135


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.909 0.000 0.000
y 0.000 -43.229 0.000
z 0.000 0.000 -27.006
Traceless
 xyz
x 8.209 0.000 0.000
y 0.000 -16.272 0.000
z 0.000 0.000 8.063
Polar
3z2-r216.126
x2-y216.321
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.397 0.000 0.000
y 0.000 6.865 0.000
z 0.000 0.000 4.561


<r2> (average value of r2) Å2
<r2> 118.258
(<r2>)1/2 10.875