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

using model chemistry: B3LYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-265.900704
Energy at 298.15K-265.902369
HF Energy-265.900704
Nuclear repulsion energy144.230349
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 B3LYP/6-31G**
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' 3749 3602 76.87      
2 A' 3484 3348 51.46      
3 A' 2241 2153 71.85      
4 A' 1819 1747 317.52      
5 A' 1377 1323 100.42      
6 A' 1185 1139 365.99      
7 A' 831 799 27.06      
8 A' 653 628 42.40      
9 A' 601 577 3.42      
10 A' 528 508 28.89      
11 A' 196 188 4.33      
12 A" 773 743 68.47      
13 A" 696 669 15.22      
14 A" 614 590 92.64      
15 A" 263 253 5.67      

Unscaled Zero Point Vibrational Energy (zpe) 9505.6 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 9133.0 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 B3LYP/6-31G**
ABC
0.40152 0.13770 0.10253

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.489 0.000
C2 -0.227 -0.941 0.000
C3 -0.473 -2.123 0.000
O4 1.319 0.785 0.000
O5 -0.879 1.323 0.000
H6 -0.693 -3.166 0.000
H7 1.376 1.756 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.44762.65401.35131.21143.72011.8701
C21.44761.20722.31622.35542.27363.1368
C32.65401.20723.41483.46891.06654.2964
O41.35132.31623.41482.26254.43330.9730
O51.21142.35543.46892.26254.49242.2959
H63.72012.27361.06654.43334.49245.3390
H71.87013.13684.29640.97302.29595.3390

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 177.252 C1 O4 H7 105.992
C2 C1 O4 111.651 C2 C1 O5 124.463
C2 C3 H6 179.851 O4 C1 O5 123.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.412      
2 C 0.353      
3 C -0.391      
4 O -0.461      
5 O -0.429      
6 H 0.184      
7 H 0.332      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.191 -1.079 0.000 1.607
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.564 6.297 0.000
y 6.297 -19.006 0.000
z 0.000 0.000 -27.378
Traceless
 xyz
x -6.372 6.297 0.000
y 6.297 9.465 0.000
z 0.000 0.000 -3.093
Polar
3z2-r2-6.186
x2-y2-10.558
xy6.297
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.031 0.758 0.000
y 0.758 8.136 0.000
z 0.000 0.000 2.183


<r2> (average value of r2) Å2
<r2> 105.726
(<r2>)1/2 10.282