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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-193.975839
Energy at 298.15K-193.980306
Nuclear repulsion energy141.124192
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 B3PW91/6-31G*
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' 3501 3349 63.72      
2 A' 3190 3052 28.77      
3 A' 3172 3034 1.78      
4 A' 3155 3018 2.85      
5 A' 3045 2913 21.43      
6 A' 2222 2126 1.74      
7 A' 1712 1637 6.45      
8 A' 1505 1440 8.85      
9 A' 1449 1386 5.32      
10 A' 1411 1350 6.97      
11 A' 1275 1220 0.06      
12 A' 1132 1083 0.26      
13 A' 985 943 20.85      
14 A' 920 880 2.10      
15 A' 665 637 3.81      
16 A' 638 610 46.66      
17 A' 379 363 5.70      
18 A' 160 153 0.14      
19 A" 3100 2965 17.44      
20 A" 1506 1441 7.92      
21 A" 1069 1022 0.23      
22 A" 987 944 0.53      
23 A" 759 726 25.33      
24 A" 581 556 63.19      
25 A" 513 491 3.96      
26 A" 286 273 0.67      
27 A" 145 139 0.74      

Unscaled Zero Point Vibrational Energy (zpe) 19729.7 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 18875.4 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 B3PW91/6-31G*
ABC
0.40202 0.11057 0.08814

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.166 -0.930 0.000
C2 2.249 -0.384 0.000
C3 1.203 0.229 0.000
H4 0.116 2.070 0.000
C5 0.000 0.987 0.000
H6 -2.076 1.160 0.000
C7 -1.239 0.462 0.000
H8 -0.675 -1.612 0.000
H9 -2.179 -1.252 0.880
H10 -2.179 -1.252 -0.880
C11 -1.576 -0.992 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 H4 C5 H6 C7 H8 H9 H10 C11
H11.06702.27924.27743.70075.64314.61963.90145.42625.42624.7419
C21.06701.21223.25102.63374.59243.58913.17174.59704.59703.8725
C32.27921.21222.13751.42183.40902.45342.63053.79563.79563.0353
H44.27743.25102.13751.08932.37382.10233.76584.13224.13223.4976
C53.70072.63371.42181.08932.08341.34522.68493.24543.24542.5289
H65.64314.59243.40902.37382.08341.08963.10562.56932.56932.2087
C74.61963.58912.45342.10231.34521.08962.14962.14412.14411.4925
H83.90143.17172.63053.76582.68493.10562.14961.77881.77881.0933
H95.42624.59703.79564.13223.24542.56932.14411.77881.76031.0983
H105.42624.59703.79564.13223.24542.56932.14411.77881.76031.0983
C114.74193.87253.03533.49762.52892.20871.49251.09331.09831.0983

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 179.637 C2 C3 C5 178.208
C3 C5 H4 116.055 C3 C5 C7 124.887
H4 C5 C7 119.058 C5 C7 H6 117.284
C5 C7 C11 125.968 H6 C7 C11 116.749
C7 C11 H8 111.537 C7 C11 H9 110.788
C7 C11 H10 110.788 H8 C11 H9 108.515
H8 C11 H10 108.515 H9 C11 H10 106.527
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.230     0.313
2 C -0.526     -0.515
3 C 0.301     0.252
4 H 0.187     0.200
5 C -0.269     -0.431
6 H 0.165     0.079
7 C -0.093     0.093
8 H 0.197     0.112
9 H 0.185     0.100
10 H 0.185     0.100
11 C -0.562     -0.305


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.746 -0.183 0.000 0.768
CHELPG        
AIM        
ESP -0.736 -0.194 0.000 0.761


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.017 -2.036 0.000
y -2.036 -27.830 0.000
z 0.000 0.000 -32.100
Traceless
 xyz
x 4.948 -2.036 0.000
y -2.036 0.728 0.000
z 0.000 0.000 -5.676
Polar
3z2-r2-11.353
x2-y22.813
xy-2.036
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> 133.119
(<r2>)1/2 11.538