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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: mPW1PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-224.989772
Energy at 298.15K-224.991478
Nuclear repulsion energy125.517241
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 mPW1PW91/cc-pVTZ
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 3072 2946 1.19      
2 A1 2409 2310 0.68      
3 A1 1442 1383 14.73      
4 A1 915 878 4.30      
5 A1 593 569 0.51      
6 A1 147 141 11.16      
7 A2 1245 1195 0.00      
8 A2 378 362 0.00      
9 B1 3112 2985 4.55      
10 B1 935 897 0.54      
11 B1 342 328 0.47      
12 B2 2404 2306 2.96      
13 B2 1344 1289 3.43      
14 B2 1004 963 4.94      
15 B2 378 363 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 9859.2 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 9457.0 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 mPW1PW91/cc-pVTZ
ABC
0.71233 0.09858 0.08801

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.828
C2 0.000 1.215 0.023
C3 0.000 -1.215 0.023
H4 0.880 0.000 1.476
H5 -0.880 0.000 1.476
N6 0.000 2.187 -0.585
N7 0.000 -2.187 -0.585

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.45801.45801.09221.09222.60442.6044
C21.45802.43072.08842.08841.14673.4566
C31.45802.43072.08842.08843.45661.1467
H41.09222.08842.08841.75963.13153.1315
H51.09222.08842.08841.75963.13153.1315
N62.60441.14673.45663.13153.13154.3746
N72.60443.45661.14673.13153.13154.3746

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 178.515 C1 C3 N7 178.515
C2 C1 C3 112.936 C2 C1 H4 109.107
C2 C1 H5 109.107 C3 C1 H4 109.107
C3 C1 H5 109.107 H4 C1 H5 107.320
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.088      
2 C -0.072      
3 C -0.072      
4 H 0.152      
5 H 0.152      
6 N -0.036      
7 N -0.036      


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 3.809 3.809
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.569 0.000 0.000
y 0.000 -42.078 0.000
z 0.000 0.000 -26.540
Traceless
 xyz
x 7.740 0.000 0.000
y 0.000 -15.524 0.000
z 0.000 0.000 7.784
Polar
3z2-r215.568
x2-y215.509
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.035 0.000 0.000
y 0.000 7.817 0.000
z 0.000 0.000 5.229


<r2> (average value of r2) Å2
<r2> 119.346
(<r2>)1/2 10.925