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 C3H4O (2-Propyn-1-ol)

using model chemistry: MP3=FULL/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 MP3=FULL/6-31+G**
 hartrees
Energy at 0K-191.342509
Energy at 298.15K-191.345607
HF Energy-190.723178
Nuclear repulsion energy101.956563
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 MP3=FULL/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' 3947 3677 33.71      
2 A' 3556 3313 48.47      
3 A' 3111 2899 41.11      
4 A' 2290 2134 2.22      
5 A' 1572 1464 0.89      
6 A' 1493 1391 28.76      
7 A' 1273 1186 90.81      
8 A' 1114 1038 99.20      
9 A' 938 873 12.98      
10 A' 662 617 48.09      
11 A' 554 516 5.08      
12 A' 201 187 8.92      
13 A" 3152 2936 25.64      
14 A" 1294 1205 0.12      
15 A" 1058 985 7.41      
16 A" 611 569 61.83      
17 A" 284 264 2.66      
18 A" 202 188 151.33      

Unscaled Zero Point Vibrational Energy (zpe) 13655.8 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 12721.8 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 MP3=FULL/6-31+G**
ABC
1.15519 0.15535 0.14053

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.668 -0.511 0.000
C2 0.000 0.796 0.000
C3 0.535 1.880 0.000
O4 0.314 -1.534 0.000
H5 -1.310 -0.572 0.883
H6 -1.310 -0.572 -0.883
H7 1.040 2.814 0.000
H8 -0.127 -2.387 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.46762.67641.41851.09281.09283.73781.9525
C21.46761.20882.35112.08962.08962.27023.1852
C32.67641.20883.42143.19293.19291.06184.3179
O41.41852.35113.42142.08312.08314.40840.9599
H51.09282.08963.19292.08311.76564.21502.3386
H61.09282.08963.19292.08311.76564.21502.3386
H73.73782.27021.06184.40844.21504.21505.3301
H81.95253.18524.31790.95992.33862.33865.3301

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 179.151 C1 O4 H8 108.826
C2 C1 O4 109.090 C2 C1 H5 108.510
C2 C1 H6 108.510 C2 C3 H7 177.828
O4 C1 H5 111.437 O4 C1 H6 111.437
H5 C1 H6 107.769
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability