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All results from a given calculation for C3H2O2 (Propiolic acid)

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-265.806788
Energy at 298.15K-265.808461
HF Energy-265.806788
Nuclear repulsion energy144.368778
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 B3PW91/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3779 3629 101.53      
2 A' 3485 3346 55.61      
3 A' 2238 2148 72.78      
4 A' 1811 1739 394.54      
5 A' 1367 1312 136.71      
6 A' 1186 1139 356.39      
7 A' 835 802 28.29      
8 A' 665 638 51.58      
9 A' 599 575 5.39      
10 A' 527 506 28.32      
11 A' 191 183 6.37      
12 A" 779 748 59.99      
13 A" 718 689 34.27      
14 A" 609 585 96.51      
15 A" 261 251 8.37      

Unscaled Zero Point Vibrational Energy (zpe) 9524.8 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 9144.8 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 B3PW91/6-31+G**
ABC
0.40317 0.13781 0.10270

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.488 0.000
C2 -0.218 -0.941 0.000
C3 -0.462 -2.125 0.000
O4 1.311 0.796 0.000
O5 -0.887 1.312 0.000
H6 -0.680 -3.170 0.000
H7 1.369 1.766 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.44532.65321.34651.21123.72091.8731
C21.44531.20882.31392.35062.27683.1378
C32.65321.20883.41693.46341.06804.3001
O41.34652.31393.41692.25764.43810.9713
O51.21122.35063.46342.25764.48762.3017
H63.72092.27681.06804.43814.48765.3446
H71.87313.13784.30010.97132.30175.3446

picture of Propiolic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 177.011 C1 O4 H7 106.708
C2 C1 O4 111.908 C2 C1 O5 124.238
C2 C3 H6 179.889 O4 C1 O5 123.854
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.299      
2 C 0.358      
3 C -0.478      
4 O -0.407      
5 O -0.403      
6 H 0.253      
7 H 0.379      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.247 -1.202 0.000 1.732
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.754 6.725 0.000
y 6.725 -19.212 0.000
z 0.000 0.000 -28.347
Traceless
 xyz
x -6.974 6.725 0.000
y 6.725 10.339 0.000
z 0.000 0.000 -3.364
Polar
3z2-r2-6.728
x2-y2-11.542
xy6.725
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.117 0.561 0.000
y 0.561 8.981 0.000
z 0.000 0.000 3.249


<r2> (average value of r2) Å2
<r2> 106.097
(<r2>)1/2 10.300