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: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at G3B3
 hartrees
Energy at 0K-196.329358
Energy at 298.15K-196.321575
Nuclear repulsion energy 
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 B3LYP/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 3153 3028 67.84      
2 A 3134 3009 12.47      
3 A 3125 3001 27.61      
4 A 3119 2995 34.94      
5 A 3112 2989 32.30      
6 A 3085 2963 7.42      
7 A 3075 2953 27.11      
8 A 3046 2925 33.97      
9 A 3034 2913 31.01      
10 A 3020 2900 33.65      
11 A 1750 1680 1.85      
12 A 1538 1477 4.98      
13 A 1528 1467 5.43      
14 A 1526 1465 2.59      
15 A 1515 1454 4.90      
16 A 1511 1451 0.94      
17 A 1461 1403 6.11      
18 A 1437 1380 0.84      
19 A 1432 1375 1.91      
20 A 1356 1302 9.46      
21 A 1316 1264 0.27      
22 A 1295 1243 0.25      
23 A 1184 1137 0.82      
24 A 1104 1060 3.32      
25 A 1076 1033 0.33      
26 A 1062 1020 0.06      
27 A 1037 996 3.25      
28 A 1014 974 0.33      
29 A 946 909 9.78      
30 A 870 836 1.51      
31 A 800 769 3.00      
32 A 726 697 27.01      
33 A 573 550 6.33      
34 A 472 453 1.19      
35 A 306 293 0.03      
36 A 260 250 0.02      
37 A 220 212 0.01      
38 A 145 139 0.32      
39 A 58 55 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 30208.9 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 29009.6 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 B3LYP/6-31G*
ABC
0.37230 0.08479 0.07762

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.199 -0.284 -0.411
H2 2.683 0.691 -0.543
H3 2.958 -0.987 -0.049
H4 1.863 -0.623 -1.398
C5 1.018 -0.189 0.570
H6 0.569 -1.180 0.699
H7 1.405 0.103 1.558
C8 -2.076 -0.674 -0.083
H9 -2.522 -0.911 -1.058
H10 -1.460 -1.526 0.218
H11 -2.909 -0.597 0.630
C12 -0.012 0.818 0.133
H13 0.369 1.836 0.024
C14 -1.306 0.615 -0.147
H15 -1.892 1.481 -0.458

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 H9 H10 H11 C12 H13 C14 H15
C11.09681.09611.09571.53872.16662.15834.30564.80623.91455.22252.53042.83423.62794.4558
H21.09681.77141.76902.18783.08452.52874.97235.47004.75955.85682.78152.64284.00874.6430
H31.09611.77141.77502.18732.51112.48615.04405.57274.45825.91903.48093.83104.55585.4572
H41.09571.76901.77502.18512.52623.07774.15304.40743.80315.18472.81733.20933.62464.4055
C51.53872.18782.18732.18511.09551.10063.19923.96292.83693.94851.50602.19522.56123.5091
H62.16663.08452.51112.52621.09551.75562.80413.56582.11313.52712.15693.09672.72983.8046
H72.15832.52872.48613.07771.10061.75563.92654.82683.55744.46832.13402.53573.24334.1034
C84.30564.97235.04404.15303.19922.80413.92651.09851.09341.09862.55623.50601.50362.1954
H94.80625.47005.57274.40743.96293.56584.82681.09851.77091.76013.27234.13232.15412.5452
H103.91454.75954.45823.80312.83692.11313.55741.09341.77091.77022.75633.83162.17733.1119
H115.22255.85685.91905.18473.94853.52714.46831.09861.76011.77023.26194.12672.15472.5562
C122.53042.78153.48092.81731.50602.15692.13402.55623.27232.75633.26191.09181.33862.0787
H132.83422.64283.83103.20932.19523.09672.53573.50604.13233.83164.12671.09182.07942.3391
C143.62794.00874.55583.62462.56122.72983.24331.50362.15412.17732.15471.33862.07941.0909
H154.45584.64305.45724.40553.50913.80464.10342.19542.54523.11192.55622.07872.33911.0909

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 109.516 C1 C5 H7 108.585
C1 C5 C12 112.411 H2 C1 H3 107.760
H2 C1 H4 107.582 H2 C1 C5 111.118
H3 C1 H4 108.158 H3 C1 C5 111.111
H4 C1 C5 110.961 C5 C12 H13 114.402
C5 C12 C14 128.313 H6 C5 H7 106.155
H6 C5 C12 111.031 H7 C5 C12 108.917
C8 C14 C12 128.056 C8 C14 H15 114.661
H9 C8 H10 107.785 H9 C8 H11 106.464
H9 C8 C14 110.783 H10 C8 H11 107.715
H10 C8 C14 112.986 H11 C8 C14 110.824
C12 C14 H15 117.283 H13 C12 C14 117.280
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.439 -0.199   -0.319
2 H 0.143 0.047   0.078
3 H 0.141 0.028   0.055
4 H 0.150 0.040   0.088
5 C -0.296 0.362   0.362
6 H 0.139 -0.049   -0.038
7 H 0.142 -0.063   -0.033
8 C -0.487 0.006   -0.180
9 H 0.154 0.019   0.066
10 H 0.153 0.024   0.076
11 H 0.155 0.014   0.061
12 C -0.089 -0.309   -0.415
13 H 0.115 0.109   0.147
14 C -0.099 -0.115   -0.032
15 H 0.119 0.088   0.086


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.027 -0.188 0.038 0.194
CHELPG -0.044 -0.193 0.029 0.200
AIM        
ESP -0.044 -0.213 0.023 0.218


Electric Quadrupole moment
Quadrupole components in D Å


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> 166.365
(<r2>)1/2 12.898