return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: wB97X-D/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 wB97X-D/3-21G*
 hartrees
Energy at 0K-192.923116
Energy at 298.15K-192.927659
HF Energy-192.923116
Nuclear repulsion energy138.191042
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 wB97X-D/3-21G*
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' 3507 3324 75.54      
2 A' 3216 3048 12.59      
3 A' 3197 3030 4.30      
4 A' 3156 2991 9.80      
5 A' 3075 2914 15.42      
6 A' 2264 2146 1.98      
7 A' 1737 1647 4.82      
8 A' 1559 1477 17.16      
9 A' 1476 1399 7.29      
10 A' 1383 1311 1.41      
11 A' 1366 1295 0.02      
12 A' 1159 1098 3.97      
13 A' 1044 989 10.44      
14 A' 941 892 6.18      
15 A' 767 727 52.23      
16 A' 564 535 4.92      
17 A' 406 385 2.18      
18 A' 176 167 1.89      
19 A" 3134 2970 12.12      
20 A" 1551 1470 13.06      
21 A" 1119 1060 1.41      
22 A" 1011 958 60.41      
23 A" 852 808 0.00      
24 A" 721 684 61.04      
25 A" 467 442 1.37      
26 A" 184 175 0.05      
27 A" 169 160 4.13      

Unscaled Zero Point Vibrational Energy (zpe) 20099.4 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 19050.2 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 wB97X-D/3-21G*
ABC
1.27705 0.07507 0.07185

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.327 -0.441 0.000
H2 -2.753 -0.933 0.883
H3 -2.753 -0.933 -0.883
H4 -2.647 0.605 0.000
C5 -0.830 -0.558 0.000
H6 -0.411 -1.561 0.000
C7 0.000 0.490 0.000
H8 -0.402 1.500 0.000
C9 1.420 0.366 0.000
C10 2.621 0.286 0.000
H11 3.668 0.467 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 C9 C10 H11
C11.09691.09691.09431.50132.21862.50642.73423.83275.00106.0630
H21.09691.76651.77712.14862.57973.22213.49684.45825.58036.6302
H31.09691.76651.77712.14862.57973.22213.49684.45825.58036.6302
H41.09431.77711.77712.15683.11252.64932.41674.07355.27726.3158
C51.50132.14862.14862.15681.08691.33662.10212.43213.55274.6131
H62.21862.57972.57973.11251.08692.09123.06092.65773.55034.5551
C72.50643.22213.22212.64931.33662.09121.08761.42512.62863.6676
H82.73423.49683.49682.41672.10213.06091.08762.14613.25744.1986
C93.83274.45824.45824.07352.43212.65771.42512.14611.20362.2501
C105.00105.58035.58035.27723.55273.55032.62863.25741.20361.0623
H116.06306.63026.63026.31584.61314.55513.66764.19862.25011.0623

picture of 3-Penten-1-yne, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 117.113 C1 C5 C7 123.960
H2 C1 H3 107.263 H2 C1 H4 108.389
H2 C1 C5 110.615 H3 C1 H4 108.389
H3 C1 C5 110.615 H4 C1 C5 111.434
C5 C7 H8 119.905 C5 C7 C9 123.411
H6 C5 C7 118.927 C7 C9 C10 178.794
H8 C7 C9 116.684 C9 C10 H11 166.409
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.662      
2 H 0.231      
3 H 0.231      
4 H 0.222      
5 C -0.164      
6 H 0.230      
7 C -0.272      
8 H 0.240      
9 C 0.048      
10 C -0.393      
11 H 0.289      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.981 -0.344 0.000 1.039
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.896 -0.111 0.000
y -0.111 -29.133 0.000
z 0.000 0.000 -32.881
Traceless
 xyz
x 7.111 -0.111 0.000
y -0.111 -0.745 0.000
z 0.000 0.000 -6.366
Polar
3z2-r2-12.733
x2-y25.237
xy-0.111
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.274 1.432 0.000
y 1.432 5.539 0.000
z 0.000 0.000 3.053


<r2> (average value of r2) Å2
<r2> 158.254
(<r2>)1/2 12.580