return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H2O3 (vinylene carbonate)

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-341.135748
Energy at 298.15K 
HF Energy-341.135748
Nuclear repulsion energy229.760529
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
(Å4/u)
Dep P Dep U
1 A1 3354 3214 0.57      
2 A1 1934 1853 712.70      
3 A1 1698 1627 5.60      
4 A1 1203 1153 157.63      
5 A1 1129 1082 11.21      
6 A1 919 880 31.50      
7 A1 748 717 3.71      
8 A2 832 798 0.00      
9 A2 586 562 0.00      
10 B1 789 756 1.53      
11 B1 726 695 91.20      
12 B1 247 237 0.43      
13 B2 3327 3188 10.93      
14 B2 1372 1315 32.99      
15 B2 1114 1067 102.22      
16 B2 1064 1020 22.13      
17 B2 910 872 0.72      
18 B2 527 505 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 11238.7 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 10770.0 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/aug-cc-pVDZ
ABC
0.31423 0.13996 0.09683

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 0.781
O2 0.000 0.000 1.971
O3 0.000 1.104 -0.021
O4 0.000 -1.104 -0.021
C5 0.000 0.666 -1.326
C6 0.000 -0.666 -1.326
H7 0.000 1.410 -2.109
H8 0.000 -1.410 -2.109

Atom - Atom Distances (Å)
  C1 O2 O3 O4 C5 C6 H7 H8
C11.18981.36491.36492.20992.20993.21593.2159
O21.18982.27762.27763.36373.36374.31694.3169
O31.36492.27762.20851.37682.19902.11043.2682
O41.36492.27762.20852.19901.37683.26822.1104
C52.20993.36371.37682.19901.33121.08032.2182
C62.20993.36372.19901.37681.33122.21821.0803
H73.21594.31692.11043.26821.08032.21822.8194
H83.21594.31693.26822.11042.21821.08032.8194

picture of vinylene carbonate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O3 C5 107.419 C1 O4 C6 107.419
O2 C1 O3 125.997 O2 C1 O4 125.997
O3 C1 O4 108.005 O3 C5 C6 108.578
O3 C5 H7 117.886 O4 C6 C5 108.578
O4 C6 H8 117.886 C5 C6 H8 133.536
C6 C5 H7 133.536
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 0.792      
2 O -0.516      
3 O -0.504      
4 O -0.504      
5 C 0.679      
6 C 0.679      
7 H -0.313      
8 H -0.313      


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 -4.674 4.674
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.220 0.000 0.000
y 0.000 -32.442 0.000
z 0.000 0.000 -33.909
Traceless
 xyz
x -0.045 0.000 0.000
y 0.000 1.123 0.000
z 0.000 0.000 -1.078
Polar
3z2-r2-2.156
x2-y2-0.778
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.307 0.000 0.000
y 0.000 6.547 0.000
z 0.000 0.000 8.277


<r2> (average value of r2) Å2
<r2> 114.281
(<r2>)1/2 10.690