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All results from a given calculation for C3H2N2 (Malononitrile)

using model chemistry: mPW1PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-224.940775
Energy at 298.15K-224.942440
Nuclear repulsion energy124.901342
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/aug-cc-pVDZ
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 3082 2953 0.80      
2 A1 2400 2300 0.39      
3 A1 1419 1360 14.26      
4 A1 916 878 4.91      
5 A1 590 565 0.33      
6 A1 144 138 10.80      
7 A2 1228 1177 0.00      
8 A2 368 353 0.00      
9 B1 3132 3001 4.46      
10 B1 923 884 0.33      
11 B1 334 320 0.49      
12 B2 2397 2297 3.31      
13 B2 1323 1268 4.36      
14 B2 1003 961 5.15      
15 B2 367 352 1.09      

Unscaled Zero Point Vibrational Energy (zpe) 9812.3 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 9403.1 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/aug-cc-pVDZ
ABC
0.67471 0.09918 0.08789

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.849
C2 0.000 1.217 0.035
C3 0.000 -1.217 0.035
H4 0.886 0.000 1.498
H5 -0.886 0.000 1.498
N6 0.000 2.178 -0.608
N7 0.000 -2.178 -0.608

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 N6 N7
C11.46351.46351.09861.09862.62012.6201
C21.46352.43332.09882.09881.15663.4551
C31.46352.43332.09882.09883.45511.1566
H41.09862.09882.09881.77243.15643.1564
H51.09862.09882.09881.77243.15643.1564
N62.62011.15663.45513.15643.15644.3563
N72.62013.45511.15663.15643.15644.3563

picture of Malononitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 180.000 C1 C3 N7 180.000
C2 C1 C3 112.467 C2 C1 H4 109.176
C2 C1 H5 109.176 C3 C1 H4 109.176
C3 C1 H5 109.176 H4 C1 H5 107.547
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.551      
2 C -0.056      
3 C -0.056      
4 H 0.063      
5 H 0.063      
6 N -0.282      
7 N -0.282      


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 3.957 3.957
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.833 0.000 0.000
y 0.000 -42.457 0.000
z 0.000 0.000 -26.835
Traceless
 xyz
x 7.813 0.000 0.000
y 0.000 -15.623 0.000
z 0.000 0.000 7.810
Polar
3z2-r215.621
x2-y215.624
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.676 0.000 0.000
y 0.000 8.417 0.000
z 0.000 0.000 5.890


<r2> (average value of r2) Å2
<r2> 119.759
(<r2>)1/2 10.943