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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: MP2/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 MP2/cc-pVDZ
 hartrees
Energy at 0K-224.353421
Energy at 298.15K-224.355017
HF Energy-223.649555
Nuclear repulsion energy123.127287
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 MP2/cc-pVDZ
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 3113 2965 0.06      
2 A1 2194 2090 2.01      
3 A1 1446 1377 11.43      
4 A1 907 864 4.90      
5 A1 572 544 0.04      
6 A1 141 135 8.52      
7 A2 1244 1185 0.00      
8 A2 349 332 0.00      
9 B1 3173 3023 2.81      
10 B1 934 890 0.08      
11 B1 323 308 0.05      
12 B2 2201 2096 7.32      
13 B2 1338 1275 4.04      
14 B2 999 952 4.21      
15 B2 354 337 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 9643.7 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 9185.6 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 MP2/cc-pVDZ
ABC
0.66251 0.09638 0.08550

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.859
C2 0.000 1.223 0.034
C3 0.000 -1.223 0.034
H4 0.891 0.000 1.509
H5 -0.891 0.000 1.509
N6 0.000 2.215 -0.613
N7 0.000 -2.215 -0.613

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.47481.47481.10271.10272.65932.6593
C21.47482.44592.11272.11271.18463.4984
C31.47482.44592.11272.11273.49841.1846
H41.10272.11272.11271.78103.19413.1941
H51.10272.11272.11271.78103.19413.1941
N62.65931.18463.49843.19413.19414.4303
N72.65933.49841.18463.19413.19414.4303

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.131 C1 C3 N7 179.131
C2 C1 C3 112.036 C2 C1 H4 109.248
C2 C1 H5 109.248 C3 C1 H4 109.248
C3 C1 H5 109.248 H4 C1 H5 107.715
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.068      
2 C -0.024      
3 C -0.024      
4 H 0.147      
5 H 0.147      
6 N -0.156      
7 N -0.156      


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 3.621 3.621
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.975 0.000 0.000
y 0.000 -41.360 0.000
z 0.000 0.000 -27.090
Traceless
 xyz
x 7.250 0.000 0.000
y 0.000 -14.328 0.000
z 0.000 0.000 7.077
Polar
3z2-r214.155
x2-y214.385
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.469 0.000 0.000
y 0.000 6.878 0.000
z 0.000 0.000 4.740


<r2> (average value of r2) Å2
<r2> 122.269
(<r2>)1/2 11.058