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, (Z)-)

using model chemistry: B1B95/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/cc-pVDZ
 hartrees
Energy at 0K-196.420015
Energy at 298.15K-196.429993
Nuclear repulsion energy171.114748
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/cc-pVDZ
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 3171 3048 50.33      
2 A 3154 3031 7.51      
3 A 3142 3020 34.04      
4 A 3140 3018 23.55      
5 A 3135 3013 14.27      
6 A 3107 2987 4.74      
7 A 3104 2983 16.65      
8 A 3052 2933 32.30      
9 A 3044 2926 29.20      
10 A 3035 2918 28.57      
11 A 1763 1695 3.12      
12 A 1475 1418 4.15      
13 A 1463 1407 6.83      
14 A 1455 1399 4.95      
15 A 1450 1393 3.59      
16 A 1447 1391 2.24      
17 A 1423 1368 8.12      
18 A 1385 1331 0.89      
19 A 1373 1319 1.55      
20 A 1316 1265 8.26      
21 A 1285 1235 0.17      
22 A 1262 1213 0.14      
23 A 1163 1117 0.23      
24 A 1085 1043 3.24      
25 A 1053 1012 3.70      
26 A 1044 1003 0.56      
27 A 1030 990 0.13      
28 A 1006 967 0.27      
29 A 947 910 13.35      
30 A 874 840 1.52      
31 A 787 756 3.16      
32 A 721 693 27.90      
33 A 565 543 6.97      
34 A 469 451 1.32      
35 A 289 278 0.05      
36 A 253 243 0.02      
37 A 206 198 0.02      
38 A 144 138 0.44      
39 A 54 52 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 29933.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 28772.1 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 B1B95/cc-pVDZ
ABC
0.37638 0.08543 0.07818

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.191 -0.277 -0.406
H2 2.678 0.703 -0.523
H3 2.952 -0.987 -0.050
H4 1.863 -0.603 -1.404
C5 1.012 -0.196 0.560
H6 0.559 -1.190 0.677
H7 1.391 0.084 1.558
C8 -2.068 -0.669 -0.085
H9 -2.530 -0.891 -1.059
H10 -1.448 -1.529 0.197
H11 -2.894 -0.599 0.640
C12 -0.009 0.812 0.135
H13 0.371 1.834 0.031
C14 -1.303 0.613 -0.142
H15 -1.886 1.488 -0.445

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 H9 H10 H11 C12 H13 C14 H15
C11.10031.09921.09941.52662.16172.15184.28884.80563.89485.20172.51412.82193.61524.4437
H21.10031.77531.77312.18073.08462.52364.95925.47284.74505.83902.76862.62853.99984.6322
H31.09921.77531.77922.18112.50942.48365.02945.57474.43935.89903.46913.82404.54605.4487
H41.09941.77311.77922.17872.52553.07724.14664.41613.79195.17762.80603.19753.61824.3989
C51.52662.18072.18112.17871.09881.10383.18223.95672.82103.92791.49702.19442.55113.5004
H62.16173.08462.50942.52551.09881.75912.78393.55612.09053.50312.15053.09862.71793.7965
H72.15182.52362.48363.07721.10381.75913.90274.81473.53764.43552.12512.53663.22914.0899
C84.28884.95925.02944.14663.18222.78393.90271.10141.09671.10162.54523.49691.49372.1947
H94.80565.47285.57474.41613.95673.55614.81471.10141.77651.76263.26834.12752.14712.5405
H103.89484.74504.43933.79192.82102.09053.53761.09671.77651.77562.74773.82682.17283.1155
H115.20175.83905.89905.17763.92793.50314.43551.10161.76261.77563.25094.11762.14782.5594
C122.51412.76863.46912.80601.49702.15052.12512.54523.26832.74773.25091.09601.33772.0781
H132.82192.62853.82403.19752.19443.09862.53663.49694.12753.82684.11761.09602.07952.3331
C143.61523.99984.54603.61822.55112.71793.22911.49372.14712.17282.14781.33772.07951.0951
H154.44374.63225.44874.39893.50043.79654.08992.19472.54053.11552.55942.07812.33311.0951

picture of 2-Pentene, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 109.777 C1 C5 H7 108.722
C1 C5 C12 112.501 H2 C1 H3 107.630
H2 C1 H4 107.424 H2 C1 C5 111.188
H3 C1 H4 108.046 H3 C1 C5 111.294
H4 C1 C5 111.086 C5 C12 H13 114.736
C5 C12 C14 128.209 H6 C5 H7 106.002
H6 C5 C12 110.952 H7 C5 C12 108.646
C8 C14 C12 127.942 C8 C14 H15 115.068
H9 C8 H10 107.844 H9 C8 H11 106.274
H9 C8 C14 110.753 H10 C8 H11 107.751
H10 C8 C14 113.131 H11 C8 C14 110.789
C12 C14 H15 116.989 H13 C12 C14 117.051
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.053      
2 H 0.030      
3 H 0.025      
4 H 0.036      
5 C -0.026      
6 H 0.017      
7 H 0.036      
8 C -0.003      
9 H 0.044      
10 H 0.029      
11 H 0.045      
12 C -0.059      
13 H -0.009      
14 C -0.106      
15 H -0.005      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.032 -0.256 0.053 0.263
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.678 0.337 0.828
y 0.337 -32.484 -0.290
z 0.828 -0.290 -34.135
Traceless
 xyz
x 1.631 0.337 0.828
y 0.337 0.422 -0.290
z 0.828 -0.290 -2.053
Polar
3z2-r2-4.107
x2-y20.806
xy0.337
xz0.828
yz-0.290


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.330 0.337 0.607
y 0.337 7.821 -0.175
z 0.607 -0.175 6.446


<r2> (average value of r2) Å2
<r2> 165.387
(<r2>)1/2 12.860