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: M06-2X/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at M06-2X/3-21G*
 hartrees
Energy at 0K-195.357941
Energy at 298.15K-195.368074
HF Energy-195.357941
Nuclear repulsion energy171.340449
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 M06-2X/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 3173 3005 27.92      
2 A 3165 2998 20.13      
3 A 3145 2979 18.55      
4 A 3138 2973 11.96      
5 A 3128 2963 3.54      
6 A 3115 2951 5.36      
7 A 3093 2930 11.69      
8 A 3076 2913 15.08      
9 A 3067 2905 18.01      
10 A 3044 2883 13.82      
11 A 1771 1678 0.60      
12 A 1576 1493 10.01      
13 A 1571 1488 8.03      
14 A 1564 1482 10.78      
15 A 1555 1473 5.64      
16 A 1545 1463 3.37      
17 A 1473 1395 9.57      
18 A 1463 1386 6.38      
19 A 1454 1377 2.67      
20 A 1369 1297 1.00      
21 A 1340 1269 0.77      
22 A 1318 1248 0.51      
23 A 1199 1136 2.21      
24 A 1130 1070 5.64      
25 A 1106 1048 0.21      
26 A 1085 1028 0.37      
27 A 1052 996 0.58      
28 A 1031 977 2.86      
29 A 951 901 11.79      
30 A 878 832 2.14      
31 A 821 777 4.58      
32 A 743 704 45.32      
33 A 583 552 7.66      
34 A 494 468 2.05      
35 A 329 312 0.07      
36 A 267 253 0.01      
37 A 257 243 0.10      
38 A 119 112 0.40      
39 A 36 35 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 30610.4 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 28994.1 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 M06-2X/3-21G*
ABC
0.35110 0.08829 0.08047

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.132 -0.330 -0.436
H2 2.613 0.629 -0.658
H3 2.896 -1.024 -0.073
H4 1.709 -0.724 -1.364
C5 1.013 -0.138 0.616
H6 0.548 -1.103 0.837
H7 1.456 0.234 1.548
C8 -2.018 -0.703 -0.058
H9 -2.414 -1.011 -1.033
H10 -1.370 -1.499 0.314
H11 -2.870 -0.606 0.625
C12 -0.012 0.856 0.120
H13 0.374 1.864 -0.024
C14 -1.289 0.616 -0.179
H15 -1.895 1.441 -0.548

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 H9 H10 H11 C12 H13 C14 H15
C11.09501.09431.09381.54802.17412.17094.18404.63533.76805.12072.51282.84163.55884.4009
H21.09501.77621.77352.18453.08162.52264.85555.30044.61935.76452.74752.63463.93114.5819
H31.09431.77621.77972.19202.51882.50664.92445.39584.31015.82283.46833.83484.49615.4090
H41.09381.77351.77972.17932.51723.07663.94924.14593.59164.99372.76833.20583.49114.2828
C51.54802.18452.19202.17931.09321.09753.15583.90162.76093.91061.51152.19732.54953.5080
H62.17413.08162.51882.51721.09321.76562.74733.50432.02793.46052.15983.09462.71363.7897
H72.17092.52262.50663.07661.09751.76563.94064.81573.53784.50232.14072.51083.26614.1336
C84.18404.85554.92443.94923.15582.74733.94061.09641.09151.09642.54633.50861.51162.2023
H94.63535.30045.39584.14593.90163.50434.81571.09641.77231.76713.25314.12962.15432.5524
H103.76804.61934.31013.59162.76092.02793.53781.09151.77231.77242.72513.80342.17303.1081
H115.12075.76455.82284.99373.91063.46054.50231.09641.76711.77243.24914.12842.15392.5528
C122.51282.74753.46832.76831.51152.15982.14072.54633.25312.72513.24911.08941.33322.0821
H132.84162.63463.83483.20582.19733.09462.51083.50864.12963.80344.12841.08942.08492.3669
C143.55883.93114.49613.49112.54952.71363.26611.51162.15432.17302.15391.33322.08491.0882
H154.40094.58195.40904.28283.50803.78974.13362.20232.55243.10812.55282.08212.36691.0882

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 109.596 C1 C5 H7 109.099
C1 C5 C12 110.425 H2 C1 H3 108.454
H2 C1 H4 108.243 H2 C1 C5 110.304
H3 C1 H4 108.856 H3 C1 C5 110.948
H4 C1 C5 109.971 C5 C12 H13 114.333
C5 C12 C14 127.218 H6 C5 H7 107.399
H6 C5 C12 111.009 H7 C5 C12 109.243
C8 C14 C12 126.924 C8 C14 H15 114.818
H9 C8 H10 108.204 H9 C8 H11 107.382
H9 C8 C14 110.372 H10 C8 H11 108.211
H10 C8 C14 112.177 H11 C8 C14 110.338
C12 C14 H15 118.257 H13 C12 C14 118.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.558      
2 H 0.193      
3 H 0.195      
4 H 0.202      
5 C -0.472      
6 H 0.206      
7 H 0.211      
8 C -0.623      
9 H 0.210      
10 H 0.206      
11 H 0.211      
12 C -0.168      
13 H 0.192      
14 C -0.200      
15 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.014 -0.194 -0.015 0.195
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.738 0.446 0.925
y 0.446 -32.439 -0.529
z 0.925 -0.529 -34.572
Traceless
 xyz
x 1.768 0.446 0.925
y 0.446 0.716 -0.529
z 0.925 -0.529 -2.484
Polar
3z2-r2-4.968
x2-y20.701
xy0.446
xz0.925
yz-0.529


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.860 0.391 0.713
y 0.391 6.746 -0.189
z 0.713 -0.189 5.484


<r2> (average value of r2) Å2
<r2> 162.422
(<r2>)1/2 12.744