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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: HSEh1PBE/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 HSEh1PBE/3-21G
 hartrees
Energy at 0K-223.492468
Energy at 298.15K-223.494494
HF Energy-223.492468
Nuclear repulsion energy124.901306
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 HSEh1PBE/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 3074 2961 1.54      
2 A1 2394 2307 0.01      
3 A1 1496 1442 27.03      
4 A1 928 894 5.52      
5 A1 639 616 0.07      
6 A1 174 167 7.02      
7 A2 1331 1283 0.00      
8 A2 466 449 0.00      
9 B1 3115 3001 5.26      
10 B1 979 943 1.04      
11 B1 423 407 0.79      
12 B2 2390 2302 0.35      
13 B2 1395 1344 0.96      
14 B2 1013 976 8.93      
15 B2 461 444 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 10139.1 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 9767.0 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 HSEh1PBE/3-21G
ABC
0.68029 0.09912 0.08795

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.845
C2 0.000 1.211 0.033
C3 0.000 -1.211 0.033
H4 0.887 0.000 1.495
H5 -0.887 0.000 1.495
N6 0.000 2.182 -0.604
N7 0.000 -2.182 -0.604

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.45781.45781.09931.09932.61922.6192
C21.45782.42202.09502.09501.16133.4520
C31.45782.42202.09502.09503.45201.1613
H41.09932.09502.09501.77313.15483.1548
H51.09932.09502.09501.77313.15483.1548
N62.61921.16133.45203.15483.15484.3632
N72.61923.45201.16133.15483.15484.3632

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 179.475 C1 C3 N7 179.475
C2 C1 C3 112.337 C2 C1 H4 109.219
C2 C1 H5 109.219 C3 C1 H4 109.219
C3 C1 H5 109.219 H4 C1 H5 107.507
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.574      
2 C 0.405      
3 C 0.405      
4 H 0.338      
5 H 0.338      
6 N -0.456      
7 N -0.456      


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 3.654 3.654
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.538 0.000 0.000
y 0.000 -41.194 0.000
z 0.000 0.000 -26.627
Traceless
 xyz
x 7.373 0.000 0.000
y 0.000 -14.612 0.000
z 0.000 0.000 7.239
Polar
3z2-r214.477
x2-y214.656
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.888 0.000 0.000
y 0.000 6.416 0.000
z 0.000 0.000 4.166


<r2> (average value of r2) Å2
<r2> 119.326
(<r2>)1/2 10.924