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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-191.334707
Energy at 298.15K-191.337500
HF Energy-190.744341
Nuclear repulsion energy101.811204
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 MP2/6-311G*
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' 3840 3650 20.61      
2 A' 3492 3318 45.85      
3 A' 3045 2894 47.53      
4 A' 2150 2044 5.33      
5 A' 1556 1478 1.44      
6 A' 1491 1416 20.24      
7 A' 1274 1210 100.26      
8 A' 1104 1049 94.03      
9 A' 926 880 13.99      
10 A' 603 573 31.57      
11 A' 540 513 10.27      
12 A' 201 191 7.69      
13 A" 3085 2931 35.53      
14 A" 1288 1224 0.19      
15 A" 1034 983 8.11      
16 A" 543 516 43.90      
17 A" 231 219 36.35      
18 A" 113 107 128.21      

Unscaled Zero Point Vibrational Energy (zpe) 13257.0 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 12598.1 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 MP2/6-311G*
ABC
1.15281 0.15501 0.14024

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.671 -0.508 0.000
C2 0.000 0.793 0.000
C3 0.553 1.876 0.000
O4 0.305 -1.534 0.000
H5 -1.318 -0.560 0.887
H6 -1.318 -0.560 -0.887
H7 1.057 2.814 0.000
H8 -0.149 -2.380 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.46402.68011.41591.09871.09873.74501.9434
C21.46401.21622.34652.08612.08612.28113.1762
C32.68011.21623.41893.19653.19651.06504.3133
O41.41592.34653.41892.09012.09014.41260.9598
H51.09872.08613.19652.09011.77374.21992.3383
H61.09872.08613.19652.09011.77374.21992.3383
H73.74502.28111.06504.41264.21994.21995.3321
H81.94343.17624.31330.95982.33832.33835.3321

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 179.745 C1 O4 H8 108.239
C2 C1 O4 109.125 C2 C1 H5 108.139
C2 C1 H6 108.139 C2 C3 H7 178.778
O4 C1 H5 111.828 O4 C1 H6 111.828
H5 C1 H6 107.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability