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

using model chemistry: B3LYP/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 B3LYP/CEP-31G
 hartrees
Energy at 0K-31.704607
Energy at 298.15K-31.709050
Nuclear repulsion energy72.445270
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 B3LYP/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' 3484 3374 75.08      
2 A' 3182 3081 47.53      
3 A' 3152 3052 16.31      
4 A' 3135 3036 3.34      
5 A' 3025 2930 37.31      
6 A' 2170 2101 4.77      
7 A' 1675 1622 5.00      
8 A' 1493 1446 14.53      
9 A' 1434 1389 8.37      
10 A' 1404 1360 6.07      
11 A' 1262 1222 0.50      
12 A' 1127 1091 0.35      
13 A' 975 944 25.62      
14 A' 900 872 1.61      
15 A' 682 660 78.38      
16 A' 640 620 7.21      
17 A' 348 337 6.16      
18 A' 134 130 0.63      
19 A" 3085 2988 47.18      
20 A" 1499 1452 15.63      
21 A" 1072 1038 0.22      
22 A" 1011 979 3.59      
23 A" 792 766 62.42      
24 A" 663 642 97.85      
25 A" 511 495 19.55      
26 A" 289 280 1.64      
27 A" 128 124 0.85      

Unscaled Zero Point Vibrational Energy (zpe) 19636.2 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 19015.6 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 B3LYP/CEP-31G
ABC
0.38611 0.10597 0.08448

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.316 -0.773 0.000
C2 2.372 -0.268 0.000
C3 1.255 0.302 0.000
H4 0.079 2.129 0.000
C5 0.000 1.037 0.000
H6 -2.117 1.109 0.000
C7 -1.242 0.446 0.000
H8 -0.572 -1.629 0.000
H9 -2.103 -1.344 0.889
H10 -2.103 -1.344 -0.889
C11 -1.510 -1.054 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06962.32364.34693.77765.74894.71833.98065.52085.52084.8343
C21.06961.25413.31762.70814.69563.68483.24344.68804.68803.9614
C32.32361.25412.17301.45513.46732.50202.65813.84413.84413.0799
H44.34693.31762.17301.09412.42072.13953.81344.19644.19643.5569
C53.77762.70811.45511.09412.11781.37612.72693.29913.29912.5794
H65.74894.69563.46732.42072.11781.09713.14352.60892.60892.2457
C74.71833.68482.50202.13951.37611.09712.18052.17582.17581.5231
H83.98063.24342.65813.81342.72693.14352.18051.79321.79321.1009
H95.52084.68803.84414.19643.29912.60892.17581.79321.77731.1070
H105.52084.68803.84414.19643.29912.60892.17581.79321.77731.1070
C114.83433.96143.07993.55692.57942.24571.52311.10091.10701.1070

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 178.905 C2 C3 C5 176.664
C3 C5 H4 116.243 C3 C5 C7 124.169
H4 C5 C7 119.588 C5 C7 H6 117.364
C5 C7 C11 125.589 H6 C7 C11 117.047
C7 C11 H8 111.378 C7 C11 H9 110.643
C7 C11 H10 110.643 H8 C11 H9 108.621
H8 C11 H10 108.621 H9 C11 H10 106.791
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.420      
2 C -0.409      
3 C -0.619      
4 H 0.280      
5 C 0.224      
6 H 0.230      
7 C -0.253      
8 H 0.184      
9 H 0.143      
10 H 0.143      
11 C -0.345      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.093 -0.205 0.000 1.112
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.736 -1.938 0.000
y -1.938 -28.461 0.000
z 0.000 0.000 -33.034
Traceless
 xyz
x 5.011 -1.938 0.000
y -1.938 0.924 0.000
z 0.000 0.000 -5.935
Polar
3z2-r2-11.870
x2-y22.724
xy-1.938
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.082 -0.590 0.000
y -0.590 6.683 0.000
z 0.000 0.000 3.849


<r2> (average value of r2) Å2
<r2> 111.327
(<r2>)1/2 10.551