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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-30.821750
Energy at 298.15K-30.826506
Nuclear repulsion energy73.232111
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/CEP-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' 3666 3292 77.86      
2 A' 3389 3043 32.19      
3 A' 3351 3010 28.21      
4 A' 3326 2987 9.90      
5 A' 3221 2893 47.61      
6 A' 2390 2146 8.17      
7 A' 1856 1667 7.81      
8 A' 1609 1445 7.89      
9 A' 1558 1400 0.10      
10 A' 1499 1346 10.48      
11 A' 1344 1206 0.42      
12 A' 1202 1080 0.28      
13 A' 1023 919 16.09      
14 A' 952 855 1.18      
15 A' 791 711 59.41      
16 A' 677 608 1.64      
17 A' 381 342 9.00      
18 A' 154 138 1.01      
19 A" 3273 2939 50.75      
20 A" 1615 1450 8.26      
21 A" 1168 1049 2.61      
22 A" 1092 980 3.53      
23 A" 838 752 36.62      
24 A" 771 693 75.87      
25 A" 533 479 14.39      
26 A" 302 271 3.13      
27 A" 145 130 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 21063.1 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 18914.7 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/CEP-31G*
ABC
0.39279 0.10814 0.08615

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.276 -0.783 0.000
C2 2.342 -0.280 0.000
C3 1.256 0.286 0.000
H4 0.088 2.106 0.000
C5 0.000 1.030 0.000
H6 -2.077 1.111 0.000
C7 -1.218 0.451 0.000
H8 -0.590 -1.623 0.000
H9 -2.096 -1.304 0.880
H10 -2.096 -1.304 -0.880
C11 -1.506 -1.038 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06072.28624.30293.74465.67814.66053.95655.46905.46904.7892
C21.06071.22553.28302.68404.63283.63473.22544.63964.63963.9225
C32.28621.22552.16251.45953.43282.47922.65583.81333.81333.0629
H44.30293.28302.16251.07982.38242.10903.79074.14494.14493.5253
C53.74462.68401.45951.07982.07811.34902.71823.25883.25882.5584
H65.67814.63283.43282.38242.07811.08333.11222.57112.57112.2233
C74.66053.63472.47922.10901.34901.08332.16662.15082.15081.5159
H83.95653.22542.65583.79072.71823.11222.16661.77331.77331.0872
H95.46904.63963.81334.14493.25882.57112.15081.77331.76041.0927
H105.46904.63963.81334.14493.25882.57112.15081.77331.76041.0927
C114.78923.92253.06293.52532.55842.22331.51591.08721.09271.0927

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 179.213 C2 C3 C5 176.888
C3 C5 H4 115.971 C3 C5 C7 123.906
H4 C5 C7 120.123 C5 C7 H6 116.967
C5 C7 C11 126.411 H6 C7 C11 116.622
C7 C11 H8 111.615 C7 C11 H9 110.016
C7 C11 H10 110.016 H8 C11 H9 108.880
H8 C11 H10 108.880 H9 C11 H10 107.323
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.368      
2 C -0.180      
3 C -0.751      
4 H 0.278      
5 C 0.177      
6 H 0.228      
7 C -0.297      
8 H 0.154      
9 H 0.111      
10 H 0.111      
11 C -0.199      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.045 -0.228 0.000 1.070
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.566 -2.237 0.000
y -2.237 -28.920 0.000
z 0.000 0.000 -33.421
Traceless
 xyz
x 5.604 -2.237 0.000
y -2.237 0.574 0.000
z 0.000 0.000 -6.178
Polar
3z2-r2-12.355
x2-y23.354
xy-2.237
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.313 -0.392 0.000
y -0.392 6.506 0.000
z 0.000 0.000 4.048


<r2> (average value of r2) Å2
<r2> 109.636
(<r2>)1/2 10.471