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 C5H6 (3-Penten-1-yne, (Z)-)

using model chemistry: BLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-191.553102
Energy at 298.15K-191.557122
Nuclear repulsion energy138.652470
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/STO-3G
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' 3580 3312 135.95      
2 A' 3379 3126 0.69      
3 A' 3337 3087 3.93      
4 A' 3307 3060 14.87      
5 A' 3194 2955 0.74      
6 A' 2267 2098 22.00      
7 A' 1726 1597 3.78      
8 A' 1619 1498 6.24      
9 A' 1516 1403 2.95      
10 A' 1460 1351 8.36      
11 A' 1292 1196 0.58      
12 A' 1152 1066 1.72      
13 A' 993 919 12.18      
14 A' 911 843 1.14      
15 A' 682 631 13.46      
16 A' 658 609 6.91      
17 A' 359 332 2.66      
18 A' 149 138 0.15      
19 A" 3330 3081 0.91      
20 A" 1620 1499 5.09      
21 A" 1110 1027 0.58      
22 A" 991 917 0.26      
23 A" 750 694 13.06      
24 A" 635 587 24.65      
25 A" 492 455 2.96      
26 A" 259 240 0.44      
27 A" 131 121 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 20449.8 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 18920.1 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 BLYP/STO-3G
ABC
0.38162 0.10763 0.08533

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.201 -0.970 0.000
C2 2.273 -0.405 0.000
C3 1.229 0.230 0.000
H4 0.127 2.115 0.000
C5 0.000 1.012 0.000
H6 -2.124 1.182 0.000
C7 -1.261 0.486 0.000
H8 -0.671 -1.623 0.000
H9 -2.200 -1.278 0.896
H10 -2.200 -1.278 -0.896
C11 -1.597 -1.015 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.08682.30864.35563.76565.74434.69443.92645.48405.48404.7981
C21.08681.22173.30992.67884.67533.64533.18604.64554.64553.9178
C32.30861.22172.18401.45733.48622.50382.65323.85203.85203.0876
H44.35563.30992.18401.11012.43722.14073.82194.21134.21133.5731
C53.76562.67881.45731.11012.13121.36702.71903.30023.30022.5803
H65.74434.67533.48622.43722.13121.10883.15922.61962.61962.2593
C74.69443.64532.50382.14071.36701.10882.18982.19012.19011.5375
H83.92643.18602.65323.82192.71903.15922.18981.80601.80601.1078
H95.48404.64553.85204.21133.30022.61962.19011.80601.79211.1121
H105.48404.64553.85204.21133.30022.61962.19011.80601.79211.1121
C114.79813.91783.08763.57312.58032.25931.53751.10781.11211.1121

picture of 3-Penten-1-yne, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 179.889 C2 C3 C5 178.776
C3 C5 H4 115.916 C3 C5 C7 124.855
H4 C5 C7 119.229 C5 C7 H6 118.450
C5 C7 C11 125.242 H6 C7 C11 116.308
C7 C11 H8 110.695 C7 C11 H9 110.467
C7 C11 H10 110.467 H8 C11 H9 108.885
H8 C11 H10 108.885 H9 C11 H10 107.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.113      
2 C -0.129      
3 C -0.043      
4 H 0.089      
5 C -0.090      
6 H 0.078      
7 C -0.053      
8 H 0.088      
9 H 0.083      
10 H 0.083      
11 C -0.218      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.571 -0.210 0.000 0.608
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.396 -1.568 0.000
y -1.568 -26.472 0.000
z 0.000 0.000 -29.461
Traceless
 xyz
x 3.571 -1.568 0.000
y -1.568 0.456 0.000
z 0.000 0.000 -4.027
Polar
3z2-r2-8.054
x2-y22.076
xy-1.568
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.129 -0.791 0.000
y -0.791 3.885 0.000
z 0.000 0.000 1.511


<r2> (average value of r2) Å2
<r2> 135.914
(<r2>)1/2 11.658