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 C5H10 (2-Pentene, (E)-)

using model chemistry: PBEPBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-196.319142
Energy at 298.15K-196.329121
Nuclear repulsion energy170.311616
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 PBEPBE/cc-pVTZ
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' 3066 3044 31.14      
2 A' 3039 3018 30.09      
3 A' 3038 3017 22.71      
4 A' 3031 3010 12.68      
5 A' 2967 2947 22.90      
6 A' 2948 2927 37.42      
7 A' 2930 2910 30.78      
8 A' 1688 1676 0.10      
9 A' 1455 1445 5.53      
10 A' 1440 1430 11.51      
11 A' 1420 1410 4.58      
12 A' 1362 1353 7.63      
13 A' 1357 1347 0.22      
14 A' 1327 1318 6.89      
15 A' 1293 1284 0.96      
16 A' 1273 1264 0.06      
17 A' 1114 1107 0.41      
18 A' 1070 1062 8.02      
19 A' 1001 994 2.20      
20 A' 930 924 10.04      
21 A' 840 835 0.03      
22 A' 569 565 0.92      
23 A' 354 351 0.29      
24 A' 195 194 0.36      
25 A" 3031 3010 29.57      
26 A" 2993 2972 19.34      
27 A" 2945 2925 15.76      
28 A" 1447 1437 7.55      
29 A" 1425 1415 6.43      
30 A" 1245 1237 0.20      
31 A" 1064 1057 1.44      
32 A" 1026 1018 0.16      
33 A" 971 964 29.96      
34 A" 801 796 2.50      
35 A" 688 683 0.58      
36 A" 289 287 2.16      
37 A" 220 218 0.02      
38 A" 197 196 2.77      
39 A" 128 127 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 29087.4 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 28886.7 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 PBEPBE/cc-pVTZ
ABC
0.44545 0.08168 0.07178

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.723 -1.239 0.000
C2 -0.982 -0.175 0.000
H3 -0.279 1.795 0.000
C4 0.000 0.734 0.000
H5 -2.950 -0.281 0.882
H6 -2.950 -0.281 -0.882
H7 -2.621 1.231 0.000
C8 -2.446 0.146 0.000
H9 1.926 0.973 -0.873
H10 1.926 0.973 0.873
C11 1.479 0.464 0.000
H12 2.987 -1.102 0.000
H13 1.510 -1.530 0.888
H14 1.510 -1.530 -0.888
C15 1.893 -1.005 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 H7 C8 H9 H10 C11 H12 H13 H14 C15
H11.09503.06612.10122.57982.57983.11452.21033.55953.55952.78363.71222.42082.42082.6258
C21.09502.09141.33802.15942.15942.15901.49853.24583.24582.54254.07552.97262.97262.9921
H33.06612.09141.09713.49593.49592.40822.72252.51042.51042.20534.36593.87933.87933.5442
C42.10121.33801.09713.24223.24222.66732.51542.12812.12811.50343.50602.86292.86292.5707
H52.57982.15943.49593.24221.76351.78101.10205.33195.03484.57726.05794.63224.95864.9754
H62.57982.15943.49593.24221.76351.78101.10205.03485.33194.57726.05794.95864.63224.9754
H73.11452.15902.40822.66731.78101.78101.09884.63684.63684.17076.07335.04745.04745.0369
C82.21031.49852.72252.51541.10201.10201.09884.53404.53403.93755.57404.38724.38724.4885
H93.55953.24582.51042.12815.33195.03484.63684.53401.74661.10512.48863.08852.53742.1629
H103.55953.24582.51042.12815.03485.33194.63684.53401.74661.10512.48862.53743.08852.1629
C112.78362.54252.20531.50344.57724.57724.17073.93751.10511.10512.17402.18322.18321.5269
H123.71224.07554.36593.50606.05796.05796.07335.57402.48862.48862.17401.77511.77511.0985
H132.42082.97263.87932.86294.63224.95865.04744.38723.08852.53742.18321.77511.77521.0996
H142.42082.97263.87932.86294.95864.63225.04744.38722.53743.08852.18321.77511.77521.0996
C152.62582.99213.54422.57074.97544.97545.03694.48852.16292.16291.52691.09851.09961.0996

picture of 2-Pentene, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 119.110 H1 C2 C8 116.045
C2 C4 H3 118.035 C2 C4 C11 126.866
C2 C8 H5 111.358 C2 C8 H6 111.358
C2 C8 H7 111.525 H3 C4 C11 115.100
C4 C2 C8 124.845 C4 C11 H9 108.374
C4 C11 H10 108.374 C4 C11 C15 116.058
H5 C8 H6 106.280 H5 C8 H7 108.046
H6 C8 H7 108.046 H9 C11 H10 104.422
H9 C11 C15 109.486 H10 C11 C15 109.486
C11 C15 H12 110.746 C11 C15 H13 111.413
C11 C15 H14 111.413 H12 C15 H13 107.721
H12 C15 H14 107.721 H13 C15 H14 107.652
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.086      
2 C -0.109      
3 H 0.082      
4 C -0.111      
5 H 0.097      
6 H 0.097      
7 H 0.090      
8 C -0.271      
9 H 0.085      
10 H 0.085      
11 C -0.115      
12 H 0.092      
13 H 0.094      
14 H 0.094      
15 C -0.297      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.108 0.021 0.000 0.110
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.213 0.535 0.000
y 0.535 -32.888 0.000
z 0.000 0.000 -34.700
Traceless
 xyz
x 1.581 0.535 0.000
y 0.535 0.569 0.000
z 0.000 0.000 -2.150
Polar
3z2-r2-4.299
x2-y20.675
xy0.535
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.286 0.455 0.000
y 0.455 9.227 0.000
z 0.000 0.000 7.118


<r2> (average value of r2) Å2
<r2> 172.624
(<r2>)1/2 13.139