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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: B3LYP/3-21G

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/3-21G
 hartrees
Energy at 0K-223.741585
Energy at 298.15K-223.743579
Nuclear repulsion energy124.551662
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/3-21G
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 2949 0.45      
2 A1 2370 2287 0.01      
3 A1 1506 1453 21.96      
4 A1 912 880 6.16      
5 A1 629 607 0.08      
6 A1 173 167 6.90      
7 A2 1329 1282 0.00      
8 A2 458 442 0.00      
9 B1 3089 2981 2.49      
10 B1 980 946 0.55      
11 B1 418 404 0.56      
12 B2 2364 2281 0.04      
13 B2 1393 1344 0.10      
14 B2 989 954 9.37      
15 B2 453 438 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10059.1 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 9706.0 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 B3LYP/3-21G
ABC
0.67855 0.09833 0.08729

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.847
C2 0.000 1.218 0.033
C3 0.000 -1.218 0.033
H4 0.886 0.000 1.497
H5 -0.886 0.000 1.497
N6 0.000 2.190 -0.605
N7 0.000 -2.190 -0.605

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46471.46471.09871.09872.62712.6271
C21.46472.43552.10012.10011.16243.4664
C31.46472.43552.10012.10013.46641.1624
H41.09872.10012.10011.77193.16163.1616
H51.09872.10012.10011.77193.16163.1616
N62.62711.16243.46643.16163.16164.3790
N72.62713.46641.16243.16163.16164.3790

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.521 C1 C3 N7 179.521
C2 C1 C3 112.482 C2 C1 H4 109.187
C2 C1 H5 109.187 C3 C1 H4 109.187
C3 C1 H5 109.187 H4 C1 H5 107.486
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.508     -0.699
2 C 0.386     0.514
3 C 0.386     0.514
4 H 0.309     0.263
5 H 0.309     0.261
6 N -0.441     -0.426
7 N -0.441     -0.426


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 3.576 3.576
CHELPG        
AIM        
ESP 0.004 0.000 3.597 3.597


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.492 0.000 0.000
y 0.000 -41.064 0.000
z 0.000 0.000 -26.647
Traceless
 xyz
x 7.363 0.000 0.000
y 0.000 -14.494 0.000
z 0.000 0.000 7.131
Polar
3z2-r214.263
x2-y214.571
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.891 0.000 0.000
y 0.000 6.428 0.000
z 0.000 0.000 4.162


<r2> (average value of r2) Å2
<r2> 119.735
(<r2>)1/2 10.942