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: BLYP/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 BLYP/6-31G*
 hartrees
Energy at 0K-191.780607
Energy at 298.15K-191.783637
HF Energy-191.780607
Nuclear repulsion energy100.937184
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 BLYP/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' 3574 3545 2.94      
2 A' 3417 3390 42.47      
3 A' 2883 2859 59.08      
4 A' 2175 2158 3.18      
5 A' 1493 1481 0.97      
6 A' 1430 1418 33.61      
7 A' 1237 1227 74.88      
8 A' 997 989 105.18      
9 A' 894 886 7.59      
10 A' 600 595 31.50      
11 A' 529 525 7.16      
12 A' 213 211 4.77      
13 A" 2894 2870 57.48      
14 A" 1213 1203 0.09      
15 A" 1013 1005 3.41      
16 A" 527 523 45.91      
17 A" 312 310 3.70      
18 A" 241 239 120.57      

Unscaled Zero Point Vibrational Energy (zpe) 12820.4 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 12716.5 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 BLYP/6-31G*
ABC
1.13645 0.15249 0.13798

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.662 -0.515 0.000
C2 0.000 0.802 0.000
C3 0.527 1.899 0.000
O4 0.325 -1.553 0.000
H5 -1.325 -0.572 0.890
H6 -1.325 -0.572 -0.890
H7 1.007 2.858 0.000
H8 -0.146 -2.408 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.47352.69041.43191.11101.11103.76311.9620
C21.47351.21702.37652.10542.10542.28963.2127
C32.69041.21703.45713.21293.21291.07274.3587
O41.43192.37653.45712.11542.11544.46270.9762
H51.11102.10543.21292.11541.77984.24162.3565
H61.11102.10543.21292.11541.77984.24162.3565
H73.76312.28961.07274.46274.24164.24165.3903
H81.96203.21274.35870.97622.35652.35655.3903

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 178.963 C1 O4 H8 107.618
C2 C1 O4 109.750 C2 C1 H5 108.279
C2 C1 H6 108.279 C2 C3 H7 179.047
O4 C1 H5 111.964 O4 C1 H6 111.964
H5 C1 H6 106.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.183      
2 C 0.383      
3 C -0.448      
4 O -0.563      
5 H 0.139      
6 H 0.139      
7 H 0.158      
8 H 0.375      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.698 -0.530 0.000 1.779
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.271 4.619 0.000
y 4.619 -16.481 0.000
z 0.000 0.000 -24.422
Traceless
 xyz
x -2.820 4.619 0.000
y 4.619 7.366 0.000
z 0.000 0.000 -4.546
Polar
3z2-r2-9.093
x2-y2-6.791
xy4.619
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.012 1.583 0.000
y 1.583 7.314 0.000
z 0.000 0.000 2.923


<r2> (average value of r2) Å2
<r2> 85.580
(<r2>)1/2 9.251