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

using model chemistry: BLYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-193.977371
Energy at 298.15K-193.981646
Nuclear repulsion energy139.723576
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/6-31+G**
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' 3409 3391 73.94      
2 A' 3088 3072 32.29      
3 A' 3068 3052 0.97      
4 A' 3049 3033 4.62      
5 A' 2948 2932 26.27      
6 A' 2119 2108 7.59      
7 A' 1613 1605 6.27      
8 A' 1447 1440 11.86      
9 A' 1391 1384 7.37      
10 A' 1363 1356 5.97      
11 A' 1236 1229 0.07      
12 A' 1088 1082 0.19      
13 A' 950 945 20.98      
14 A' 873 869 4.07      
15 A' 644 641 5.49      
16 A' 588 585 54.44      
17 A' 361 359 6.29      
18 A' 153 153 0.41      
19 A" 2987 2971 17.86      
20 A" 1449 1442 7.95      
21 A" 1026 1021 1.12      
22 A" 943 938 0.69      
23 A" 729 725 23.14      
24 A" 535 532 83.13      
25 A" 495 492 2.17      
26 A" 278 276 1.63      
27 A" 126 125 0.94      

Unscaled Zero Point Vibrational Energy (zpe) 18979.6 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 18879.0 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 BLYP/6-31+G**
ABC
0.40094 0.10706 0.08586

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.219 -0.889 0.000
C2 2.288 -0.358 0.000
C3 1.217 0.238 0.000
H4 0.109 2.075 0.000
C5 0.000 0.984 0.000
H6 -2.092 1.159 0.000
C7 -1.253 0.454 0.000
H8 -0.706 -1.648 0.000
H9 -2.214 -1.268 0.885
H10 -2.214 -1.268 -0.885
C11 -1.603 -1.012 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.07162.29714.29673.72445.69244.66953.99705.51705.51704.8233
C21.07161.22553.26652.65294.63593.63353.26014.67774.67773.9459
C32.29711.22552.14561.42793.43552.48022.69343.85033.85033.0850
H44.29673.26652.14561.09622.38402.11763.81074.16594.16593.5295
C53.72442.65291.42791.09622.09961.36112.72483.27993.27992.5600
H65.69244.63593.43552.38402.09961.09613.13042.58652.58652.2251
C74.66953.63352.48022.11761.36111.09612.17142.16112.16111.5064
H83.99703.26012.69343.81072.72483.13042.17141.78901.78901.0998
H95.51704.67773.85034.16593.27992.58652.16111.78901.76961.1053
H105.51704.67773.85034.16593.27992.58652.16111.78901.76961.1053
C114.82333.94593.08503.52952.56002.22511.50641.09981.10531.1053

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 179.340 C2 C3 C5 177.591
C3 C5 H4 115.815 C3 C5 C7 125.550
H4 C5 C7 118.634 C5 C7 H6 116.996
C5 C7 C11 126.367 H6 C7 C11 116.636
C7 C11 H8 111.906 C7 C11 H9 110.743
C7 C11 H10 110.743 H8 C11 H9 108.447
H8 C11 H10 108.447 H9 C11 H10 106.358
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.177      
2 C -0.351      
3 C 0.647      
4 H 0.138      
5 C -0.513      
6 H 0.120      
7 C 0.044      
8 H 0.166      
9 H 0.158      
10 H 0.158      
11 C -0.745      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.876 -0.239 0.000 0.908
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.738 -1.906 0.000
y -1.906 -29.528 0.000
z 0.000 0.000 -33.759
Traceless
 xyz
x 4.905 -1.906 0.000
y -1.906 0.720 0.000
z 0.000 0.000 -5.626
Polar
3z2-r2-11.252
x2-y22.790
xy-1.906
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 137.183
(<r2>)1/2 11.713