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

using model chemistry: B1B95/6-31+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 B1B95/6-31+G**
 hartrees
Energy at 0K-193.966070
Energy at 298.15K-193.970558
Nuclear repulsion energy141.328994
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 B1B95/6-31+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' 3496 3344 76.58      
2 A' 3199 3060 22.08      
3 A' 3180 3042 2.11      
4 A' 3159 3022 3.03      
5 A' 3051 2918 19.91      
6 A' 2215 2119 7.22      
7 A' 1707 1633 7.41      
8 A' 1479 1414 11.46      
9 A' 1428 1366 7.59      
10 A' 1387 1327 6.92      
11 A' 1260 1205 0.08      
12 A' 1120 1071 0.04      
13 A' 977 935 20.50      
14 A' 918 878 3.18      
15 A' 662 633 40.00      
16 A' 655 627 19.18      
17 A' 378 362 7.96      
18 A' 159 152 0.48      
19 A" 3111 2976 12.80      
20 A" 1479 1415 9.01      
21 A" 1055 1009 1.08      
22 A" 984 942 0.99      
23 A" 754 722 29.01      
24 A" 616 589 66.82      
25 A" 515 493 15.81      
26 A" 284 271 2.21      
27 A" 135 129 0.99      

Unscaled Zero Point Vibrational Energy (zpe) 19680.7 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 18826.6 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 B1B95/6-31+G**
ABC
0.40245 0.11104 0.08845

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.159 -0.937 0.000
C2 2.245 -0.390 0.000
C3 1.200 0.226 0.000
H4 0.120 2.067 0.000
C5 0.000 0.987 0.000
H6 -2.072 1.162 0.000
C7 -1.238 0.464 0.000
H8 -0.673 -1.605 0.000
H9 -2.173 -1.246 0.878
H10 -2.173 -1.246 -0.878
C11 -1.572 -0.987 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06562.27814.27393.69915.63674.61493.88955.41265.41264.7311
C21.06561.21253.24882.63354.58743.58593.16044.58474.58473.8631
C32.27811.21252.13511.42133.40382.44992.61923.78363.78363.0260
H44.27393.24882.13511.08682.37162.10053.75664.12344.12343.4914
C53.69912.63351.42131.08682.07961.34372.67783.23703.23702.5235
H65.63674.58743.40382.37162.07961.08743.10022.56442.56442.2061
C74.61493.58592.44992.10051.34371.08742.14492.13762.13761.4893
H83.88953.16042.61923.75662.67783.10022.14491.77501.77501.0909
H95.41264.58473.78364.12343.23702.56442.13761.77501.75641.0952
H105.41264.58473.78364.12343.23702.56442.13761.77501.75641.0952
C114.73113.86313.02603.49142.52352.20611.48931.09091.09521.0952

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 179.619 C2 C3 C5 178.153
C3 C5 H4 116.060 C3 C5 C7 124.726
H4 C5 C7 119.214 C5 C7 H6 117.221
C5 C7 C11 125.856 H6 C7 C11 116.923
C7 C11 H8 111.533 C7 C11 H9 110.685
C7 C11 H10 110.685 H8 C11 H9 108.579
H8 C11 H10 108.579 H9 C11 H10 106.621
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.221      
2 C -0.043      
3 C 0.193      
4 H 0.170      
5 C -0.474      
6 H 0.150      
7 C 0.006      
8 H 0.179      
9 H 0.172      
10 H 0.172      
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
  -0.884 -0.230 0.000 0.913
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.954 -2.070 0.000
y -2.070 -28.697 0.000
z 0.000 0.000 -33.207
Traceless
 xyz
x 4.998 -2.070 0.000
y -2.070 0.884 0.000
z 0.000 0.000 -5.882
Polar
3z2-r2-11.764
x2-y22.743
xy-2.070
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.273 -0.747 0.000
y -0.747 7.690 0.000
z 0.000 0.000 5.410


<r2> (average value of r2) Å2
<r2> 133.300
(<r2>)1/2 11.546