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All results from a given calculation for C3H4O (2-Propyn-1-ol)

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-191.646404
Energy at 298.15K-191.649569
HF Energy-191.460937
Nuclear repulsion energy101.759980
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3764 3573 16.92      
2 A' 3518 3339 46.71      
3 A' 3026 2872 48.87      
4 A' 2219 2106 4.81      
5 A' 1560 1481 0.94      
6 A' 1489 1414 32.57      
7 A' 1279 1214 89.44      
8 A' 1086 1030 97.96      
9 A' 928 881 12.37      
10 A' 631 599 36.07      
11 A' 550 522 5.99      
12 A' 214 203 5.89      
13 A" 3053 2898 47.18      
14 A" 1276 1211 0.26      
15 A" 1056 1002 4.86      
16 A" 573 544 48.75      
17 A" 318 302 7.59      
18 A" 255 242 133.45      

Unscaled Zero Point Vibrational Energy (zpe) 13396.9 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 12716.3 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 B2PLYP/6-31G*
ABC
1.16147 0.15460 0.14002

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.661 -0.515 0.000
C2 0.000 0.793 0.000
C3 0.520 1.887 0.000
O4 0.324 -1.536 0.000
H5 -1.312 -0.577 0.884
H6 -1.312 -0.577 -0.884
H7 1.005 2.836 0.000
H8 -0.134 -2.387 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.46562.67721.41821.10011.10013.74261.9444
C21.46561.21172.35132.09282.09282.27703.1830
C32.67721.21173.42883.19553.19551.06554.3243
O41.41822.35133.42882.09262.09264.42470.9669
H51.10012.09283.19552.09261.76854.21892.3338
H61.10012.09283.19552.09261.76854.21892.3338
H73.74262.27701.06554.42474.21894.21895.3461
H81.94443.18304.32430.96692.33382.33385.3461

picture of 2-Propyn-1-ol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 178.641 C1 O4 H8 107.717
C2 C1 O4 109.232 C2 C1 H5 108.468
C2 C1 H6 108.468 C2 C3 H7 178.367
O4 C1 H5 111.779 O4 C1 H6 111.779
H5 C1 H6 106.997
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.115      
2 C 0.239      
3 C -0.456      
4 O -0.653      
5 H 0.167      
6 H 0.167      
7 H 0.234      
8 H 0.416      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.783 1.418 0.000
y 1.418 6.748 0.000
z 0.000 0.000 2.833


<r2> (average value of r2) Å2
<r2> 84.490
(<r2>)1/2 9.192