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All results from a given calculation for C5H6 (3-Penten-1-yne, (Z)-)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-192.725652
Energy at 298.15K-192.730094
Nuclear repulsion energy140.542413
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 PBEPBE/3-21G
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' 3421 3390 61.18      
2 A' 3108 3080 21.09      
3 A' 3084 3056 0.32      
4 A' 3069 3041 1.89      
5 A' 2969 2942 14.39      
6 A' 2151 2132 0.98      
7 A' 1630 1615 4.00      
8 A' 1495 1482 12.52      
9 A' 1414 1401 7.82      
10 A' 1403 1390 9.09      
11 A' 1261 1249 0.71      
12 A' 1114 1104 2.11      
13 A' 961 953 23.90      
14 A' 885 877 2.48      
15 A' 672 666 44.42      
16 A' 659 653 7.85      
17 A' 363 360 6.49      
18 A' 155 153 0.38      
19 A" 3018 2991 13.46      
20 A" 1503 1490 11.03      
21 A" 1060 1050 0.16      
22 A" 957 948 0.55      
23 A" 734 728 36.83      
24 A" 619 614 59.63      
25 A" 494 489 13.04      
26 A" 263 261 1.26      
27 A" 152 150 1.14      

Unscaled Zero Point Vibrational Energy (zpe) 19306.7 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 19131.0 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 PBEPBE/3-21G
ABC
0.39085 0.11141 0.08815

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.155 -0.962 0.000
C2 2.241 -0.404 0.000
C3 1.196 0.230 0.000
H4 0.126 2.092 0.000
C5 0.000 1.003 0.000
H6 -2.103 1.163 0.000
C7 -1.249 0.476 0.000
H8 -0.631 -1.591 0.000
H9 -2.159 -1.269 0.891
H10 -2.159 -1.269 -0.891
C11 -1.560 -0.998 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.07022.29254.30163.71655.67124.63233.83745.39655.39654.7146
C21.07021.22233.27242.64634.61873.59943.10794.57224.57223.8473
C32.29251.22232.14831.42433.42912.45762.57983.78143.78143.0174
H44.30163.27242.14831.09702.41552.12243.76064.16104.16103.5202
C53.71652.64631.42431.09702.10951.35562.66963.25823.25822.5369
H65.67124.61873.42912.41552.10951.09653.12282.59022.59022.2278
C74.63233.59942.45762.12241.35561.09652.15712.15982.15981.5058
H83.83743.10792.57983.76062.66963.12282.15711.79781.79781.1023
H95.39654.57223.78144.16103.25822.59022.15981.79781.78101.1071
H105.39654.57223.78144.16103.25822.59022.15981.79781.78101.1071
C114.71463.84733.01743.52022.53692.22781.50581.10231.10711.1071

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 179.827 C2 C3 C5 178.389
C3 C5 H4 116.271 C3 C5 C7 124.250
H4 C5 C7 119.478 C5 C7 H6 118.309
C5 C7 C11 124.806 H6 C7 C11 116.885
C7 C11 H8 110.649 C7 C11 H9 110.576
C7 C11 H10 110.576 H8 C11 H9 108.922
H8 C11 H10 108.922 H9 C11 H10 107.103
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.247      
2 C -0.350      
3 C 0.084      
4 H 0.225      
5 C -0.290      
6 H 0.202      
7 C -0.140      
8 H 0.234      
9 H 0.223      
10 H 0.223      
11 C -0.658      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.751 -0.220 0.000 0.783
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.292 -2.081 0.000
y -2.081 -27.998 0.000
z 0.000 0.000 -32.940
Traceless
 xyz
x 5.178 -2.081 0.000
y -2.081 1.117 0.000
z 0.000 0.000 -6.295
Polar
3z2-r2-12.589
x2-y22.707
xy-2.081
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.766 -0.877 0.000
y -0.877 6.364 0.000
z 0.000 0.000 3.121


<r2> (average value of r2) Å2
<r2> 133.410
(<r2>)1/2 11.550