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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B3LYP/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 B3LYP/6-31+G**
 hartrees
Energy at 0K-224.990143
Energy at 298.15K-224.991787
Nuclear repulsion energy124.382438
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 B3LYP/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 3056 2947 0.56      
2 A1 2379 2294 0.57      
3 A1 1450 1398 14.06      
4 A1 900 868 6.38      
5 A1 578 557 0.16      
6 A1 146 140 10.94      
7 A2 1242 1197 0.00      
8 A2 370 356 0.00      
9 B1 3098 2987 3.36      
10 B1 937 904 0.26      
11 B1 337 325 0.18      
12 B2 2374 2289 2.75      
13 B2 1344 1295 5.08      
14 B2 987 951 7.40      
15 B2 366 353 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 9780.4 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 9430.3 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 B3LYP/6-31+G**
ABC
0.70088 0.09677 0.08640

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.836
C2 0.000 1.225 0.024
C3 0.000 -1.225 0.024
H4 0.883 0.000 1.485
H5 -0.883 0.000 1.485
N6 0.000 2.208 -0.591
N7 0.000 -2.208 -0.591

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46971.46971.09671.09672.62892.6289
C21.46972.45062.10192.10191.15943.4883
C31.46972.45062.10192.10193.48831.1594
H41.09672.10192.10191.76683.15723.1572
H51.09672.10192.10191.76683.15723.1572
N62.62891.15943.48833.15723.15724.4169
N72.62893.48831.15943.15723.15724.4169

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.490 C1 C3 N7 178.490
C2 C1 C3 112.958 C2 C1 H4 109.102
C2 C1 H5 109.102 C3 C1 H4 109.102
C3 C1 H5 109.102 H4 C1 H5 107.318
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.233     -0.397
2 C 0.324     0.445
3 C 0.324     0.445
4 H 0.236     0.200
5 H 0.236     0.199
6 N -0.444     -0.446
7 N -0.444     -0.446


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 3.906 3.906
CHELPG        
AIM        
ESP 0.005 0.000 4.005 4.005


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.120 0.000 0.000
y 0.000 -43.296 0.000
z 0.000 0.000 -27.113
Traceless
 xyz
x 8.084 0.000 0.000
y 0.000 -16.179 0.000
z 0.000 0.000 8.095
Polar
3z2-r216.190
x2-y216.176
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.083 0.000 0.000
y 0.000 8.264 0.000
z 0.000 0.000 5.376


<r2> (average value of r2) Å2
<r2> 120.834
(<r2>)1/2 10.992