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

using model chemistry: HF/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 HF/3-21G*
 hartrees
Energy at 0K-191.680130
Energy at 298.15K-191.685135
Nuclear repulsion energy142.128668
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 HF/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' 3660 3304 72.35      
2 A' 3354 3027 21.74      
3 A' 3328 3004 4.51      
4 A' 3292 2971 4.02      
5 A' 3191 2880 20.45      
6 A' 2395 2162 2.08      
7 A' 1842 1663 5.42      
8 A' 1654 1493 9.63      
9 A' 1582 1428 6.24      
10 A' 1567 1414 5.51      
11 A' 1401 1265 0.20      
12 A' 1236 1115 1.52      
13 A' 1022 923 21.03      
14 A' 929 839 1.61      
15 A' 905 817 52.61      
16 A' 730 659 3.14      
17 A' 427 385 11.03      
18 A' 185 167 0.70      
19 A" 3232 2917 21.39      
20 A" 1660 1499 10.66      
21 A" 1218 1099 0.01      
22 A" 1135 1025 1.65      
23 A" 902 814 89.44      
24 A" 848 765 4.87      
25 A" 577 521 28.78      
26 A" 309 279 3.95      
27 A" 137 123 0.55      

Unscaled Zero Point Vibrational Energy (zpe) 21358.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 19277.9 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 HF/3-21G*
ABC
0.40011 0.11287 0.08948

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.116 -0.953 0.000
C2 2.219 -0.405 0.000
C3 1.204 0.216 0.000
H4 0.135 2.056 0.000
C5 0.000 0.991 0.000
H6 -2.053 1.161 0.000
C7 -1.221 0.481 0.000
H8 -0.679 -1.598 0.000
H9 -2.161 -1.229 0.876
H10 -2.161 -1.229 -0.876
C11 -1.568 -0.984 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.05072.24134.23543.67255.58404.56743.84885.35635.35634.6836
C21.05071.19073.22522.62194.54983.55223.13364.54244.54243.8308
C32.24131.19072.12761.43143.39052.43882.61443.76553.76553.0201
H44.23543.22522.12761.07372.36362.07873.74404.10324.10323.4847
C53.67252.62191.43141.07372.05961.32332.67693.22013.22012.5217
H65.58404.54983.39052.36362.05961.07473.08282.54862.54862.1995
C74.56743.55222.43882.07871.32331.07472.14862.13922.13921.5053
H83.84883.13362.61443.74402.67693.08282.14861.76111.76111.0807
H95.35634.54243.76554.10323.22012.54862.13921.76111.75151.0860
H105.35634.54243.76554.10323.22012.54862.13921.76111.75151.0860
C114.68363.83083.02013.48472.52172.19951.50531.08071.08601.0860

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 179.937 C2 C3 C5 178.702
C3 C5 H4 115.540 C3 C5 C7 124.539
H4 C5 C7 119.921 C5 C7 H6 118.010
C5 C7 C11 126.013 H6 C7 C11 115.977
C7 C11 H8 111.312 C7 C11 H9 110.235
C7 C11 H10 110.235 H8 C11 H9 108.735
H8 C11 H10 108.735 H9 C11 H10 107.489
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.338 0.312    
2 C -0.395 -0.502    
3 C -0.112 0.206    
4 H 0.257 0.168    
5 C -0.179 -0.311    
6 H 0.232 0.112    
7 C -0.182 -0.080    
8 H 0.241 0.022    
9 H 0.221 0.005    
10 H 0.221 0.005    
11 C -0.641 0.064    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.812 -0.159 0.000 0.827
CHELPG -0.680 -0.138 0.000 0.694
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.917 -2.286 0.000
y -2.286 -28.652 0.000
z 0.000 0.000 -33.635
Traceless
 xyz
x 5.227 -2.286 0.000
y -2.286 1.124 0.000
z 0.000 0.000 -6.351
Polar
3z2-r2-12.702
x2-y22.735
xy-2.286
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.966 -0.680 0.000
y -0.680 5.807 0.000
z 0.000 0.000 2.957


<r2> (average value of r2) Å2
<r2> 131.986
(<r2>)1/2 11.488