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

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-192.996225
Energy at 298.15K-193.000834
Nuclear repulsion energy141.170634
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3496 3374 63.86      
2 A' 3180 3069 23.43      
3 A' 3157 3046 0.45      
4 A' 3137 3027 2.79      
5 A' 3038 2931 16.40      
6 A' 2223 2145 0.84      
7 A' 1685 1626 3.82      
8 A' 1546 1491 10.72      
9 A' 1465 1414 7.14      
10 A' 1456 1405 6.32      
11 A' 1305 1259 0.37      
12 A' 1148 1108 2.08      
13 A' 978 943 21.28      
14 A' 892 861 1.60      
15 A' 727 702 48.65      
16 A' 680 656 2.16      
17 A' 379 365 7.21      
18 A' 163 157 0.40      
19 A" 3078 2970 16.79      
20 A" 1554 1499 9.95      
21 A" 1104 1065 0.04      
22 A" 1007 972 0.64      
23 A" 766 739 38.85      
24 A" 685 661 49.53      
25 A" 515 497 16.05      
26 A" 275 265 1.72      
27 A" 146 141 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 19890.2 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 19192.1 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/3-21G
ABC
0.39619 0.11167 0.08856

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.145 -0.946 0.000
C2 2.236 -0.397 0.000
C3 1.200 0.227 0.000
H4 0.125 2.075 0.000
C5 0.000 0.995 0.000
H6 -2.084 1.158 0.000
C7 -1.239 0.474 0.000
H8 -0.653 -1.597 0.000
H9 -2.162 -1.257 0.884
H10 -2.162 -1.257 -0.884
C11 -1.565 -0.995 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06152.27144.27163.69545.63594.60793.85285.38885.38884.7101
C21.06151.20993.25092.63404.59133.58273.12844.56804.56803.8483
C32.27141.20992.13761.42433.41292.45122.59983.77973.77973.0231
H44.27163.25092.13761.08742.39122.10313.75304.13674.13673.5044
C53.69542.63401.42431.08742.09001.34392.67233.24433.24432.5316
H65.63594.59133.41292.39122.09001.08723.10432.57302.57302.2149
C74.60793.58272.45122.10311.34391.08722.15192.15152.15151.5048
H83.85283.12842.59983.75302.67233.10432.15191.78171.78171.0928
H95.38884.56803.77974.13673.24432.57302.15151.78171.76751.0981
H105.38884.56803.77974.13673.24432.57302.15151.78171.76751.0981
C114.71013.84833.02313.50442.53162.21491.50481.09281.09811.0981

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 179.893 C2 C3 C5 178.450
C3 C5 H4 116.010 C3 C5 C7 124.594
H4 C5 C7 119.396 C5 C7 H6 118.186
C5 C7 C11 125.325 H6 C7 C11 116.490
C7 C11 H8 110.877 C7 C11 H9 110.527
C7 C11 H10 110.527 H8 C11 H9 108.814
H8 C11 H10 108.814 H9 C11 H10 107.180
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.246     0.306
2 C -0.354     -0.495
3 C 0.066     0.239
4 H 0.213     0.212
5 C -0.254     -0.439
6 H 0.191     0.098
7 C -0.128     0.063
8 H 0.221     0.126
9 H 0.207     0.109
10 H 0.207     0.109
11 C -0.614     -0.329


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.739 -0.186 0.000 0.762
CHELPG        
AIM        
ESP -0.728 -0.192 0.000 0.752


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.531 -2.046 0.000
y -2.046 -28.182 0.000
z 0.000 0.000 -32.846
Traceless
 xyz
x 4.983 -2.046 0.000
y -2.046 1.007 0.000
z 0.000 0.000 -5.990
Polar
3z2-r2-11.979
x2-y22.650
xy-2.046
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.402 -0.823 0.000
y -0.823 6.125 0.000
z 0.000 0.000 3.048


<r2> (average value of r2) Å2
<r2> 132.888
(<r2>)1/2 11.528