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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-224.944437
Energy at 298.15K-224.946141
Nuclear repulsion energy125.373601
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 B1B95/6-311G*
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 3074 2947 0.21      
2 A1 2403 2304 0.56      
3 A1 1453 1393 15.78      
4 A1 915 878 4.71      
5 A1 592 567 0.36      
6 A1 148 142 10.23      
7 A2 1259 1207 0.00      
8 A2 381 365 0.00      
9 B1 3115 2986 1.98      
10 B1 936 897 0.72      
11 B1 346 332 0.12      
12 B2 2399 2300 1.91      
13 B2 1352 1296 2.28      
14 B2 1005 964 6.61      
15 B2 382 366 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 9880.7 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 9471.7 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 B1B95/6-311G*
ABC
0.70726 0.09855 0.08790

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.830
C2 0.000 1.216 0.025
C3 0.000 -1.216 0.025
H4 0.879 0.000 1.481
H5 -0.879 0.000 1.481
N6 0.000 2.188 -0.589
N7 0.000 -2.188 -0.589

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.45841.45841.09311.09312.60762.6076
C21.45842.43112.09032.09031.14943.4580
C31.45842.43112.09032.09033.45801.1494
H41.09312.09032.09031.75743.13683.1368
H51.09312.09032.09031.75743.13683.1368
N62.60761.14943.45803.13683.13684.3753
N72.60763.45801.14943.13683.13684.3753

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.703 C1 C3 N7 178.703
C2 C1 C3 112.919 C2 C1 H4 109.186
C2 C1 H5 109.186 C3 C1 H4 109.186
C3 C1 H5 109.186 H4 C1 H5 107.003
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.513      
2 C 0.166      
3 C 0.166      
4 H 0.318      
5 H 0.318      
6 N -0.227      
7 N -0.227      


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 3.750 3.750
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.530 0.000 0.000
y 0.000 -41.736 0.000
z 0.000 0.000 -26.518
Traceless
 xyz
x 7.597 0.000 0.000
y 0.000 -15.212 0.000
z 0.000 0.000 7.615
Polar
3z2-r215.229
x2-y215.206
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.522 0.000 0.000
y 0.000 7.383 0.000
z 0.000 0.000 4.806


<r2> (average value of r2) Å2
<r2> 119.368
(<r2>)1/2 10.926