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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: QCISD/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/STO-3G
 hartrees
Energy at 0K-221.195304
Energy at 298.15K-221.196667
HF Energy-220.789504
Nuclear repulsion energy120.218997
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 QCISD/STO-3G
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 3301 3301 1.00      
2 A1 2325 2325 11.71      
3 A1 1610 1610 2.54      
4 A1 914 914 3.30      
5 A1 573 573 0.50      
6 A1 143 143 5.95      
7 A2 1314 1314 0.00      
8 A2 348 348 0.00      
9 B1 3394 3394 2.72      
10 B1 1010 1010 0.22      
11 B1 329 329 0.70      
12 B2 2324 2324 43.87      
13 B2 1437 1437 6.58      
14 B2 1002 1002 3.48      
15 B2 353 353 0.54      

Unscaled Zero Point Vibrational Energy (zpe) 10188.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10188.7 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 QCISD/STO-3G
ABC
0.62134 0.09205 0.08145

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.891
C2 0.000 1.259 0.036
C3 0.000 -1.259 0.036
H4 0.906 0.000 1.548
H5 -0.906 0.000 1.548
N6 0.000 2.263 -0.633
N7 0.000 -2.263 -0.633

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.52211.52211.11851.11852.72862.7286
C21.52212.51812.16592.16591.20663.5851
C31.52212.51812.16592.16593.58511.2066
H41.11852.16592.16591.81113.27083.2708
H51.11852.16592.16591.81113.27083.2708
N62.72861.20663.58513.27083.27084.5262
N72.72863.58511.20663.27083.27084.5262

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.489 C1 C3 N7 179.489
C2 C1 C3 111.620 C2 C1 H4 109.261
C2 C1 H5 109.261 C3 C1 H4 109.261
C3 C1 H5 109.261 H4 C1 H5 108.108
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at QCISD/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.077      
2 C 0.068      
3 C 0.068      
4 H 0.124      
5 H 0.124      
6 N -0.154      
7 N -0.154      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 126.052
(<r2>)1/2 11.227