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 C5H8 (1,4-Pentadiene)

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 C2 1A
Energy calculated at M06-2X/3-21G*
 hartrees
Energy at 0K-194.127291
Energy at 298.15K-194.134851
HF Energy-194.127291
Nuclear repulsion energy155.325895
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 3252 3080 6.92      
2 A 3145 2979 0.82      
3 A 3138 2972 6.72      
4 A 3107 2943 10.82      
5 A 1745 1652 0.17      
6 A 1540 1459 11.63      
7 A 1504 1424 0.01      
8 A 1350 1279 0.00      
9 A 1315 1246 0.00      
10 A 1120 1061 0.57      
11 A 1067 1011 3.84      
12 A 1014 960 62.14      
13 A 930 881 7.60      
14 A 702 665 9.38      
15 A 382 362 0.33      
16 A 313 297 0.47      
17 A 57 54 0.05      
18 B 3252 3080 11.08      
19 B 3159 2992 13.78      
20 B 3145 2979 5.88      
21 B 3130 2965 2.61      
22 B 1728 1637 15.74      
23 B 1500 1421 4.82      
24 B 1371 1298 0.86      
25 B 1348 1277 1.55      
26 B 1195 1132 3.77      
27 B 1068 1012 6.39      
28 B 1012 958 65.35      
29 B 976 924 0.72      
30 B 931 882 9.81      
31 B 635 602 16.20      
32 B 475 450 2.18      
33 B 83 79 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25344.5 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 24006.3 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
0.64216 0.07935 0.07853

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.694
C2 0.000 1.243 -0.175
C3 0.000 -1.243 -0.175
C4 0.978 2.143 -0.192
C5 -0.978 -2.143 -0.192
H6 -0.889 -0.009 1.337
H7 0.889 0.009 1.337
H8 -0.862 1.351 -0.830
H9 0.862 -1.351 -0.830
H10 0.948 3.011 -0.841
H11 -0.948 -3.011 -0.841
H12 1.848 2.046 0.452
H13 -1.848 -2.046 0.452

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51691.51692.51662.51661.09721.09722.21182.21183.51043.51042.76712.7671
C21.51692.48661.32903.52482.15552.14491.08792.81142.11394.40952.10973.8241
C31.51692.48663.52481.32902.14492.15552.81141.08794.40952.11393.82412.1097
C42.51661.32903.52484.71143.23342.62662.10223.55431.08455.54081.08635.0935
C52.51663.52481.32904.71142.62663.23343.55432.10225.54081.08455.09351.0863
H61.09722.15552.14493.23342.62661.77772.55933.09264.15253.70953.53472.4187
H71.09722.14492.15552.62663.23341.77773.09262.55933.70954.15252.41873.5347
H82.21181.08792.81142.10223.55432.55933.09263.20572.45614.36353.07693.7624
H92.21182.81141.08793.55432.10223.09262.55933.20574.36352.45613.76243.0769
H103.51042.11394.40951.08455.54084.15253.70952.45614.36356.31411.84735.9213
H113.51044.40952.11395.54081.08453.70954.15254.36352.45616.31415.92131.8473
H122.76712.10973.82411.08635.09353.53472.41873.07693.76241.84735.92135.5131
H132.76713.82412.10975.09351.08632.41873.53473.76243.07695.92131.84735.5131

picture of 1,4-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.195 C1 C2 H8 115.242
C1 C3 C5 124.195 C1 C3 H9 115.242
C2 C1 C3 110.088 C2 C1 H6 110.049
C2 C1 H7 109.211 C2 C4 H10 121.964
C2 C4 H12 121.401 C3 C1 H6 109.211
C3 C1 H7 110.049 C3 C5 H11 121.964
C3 C5 H13 121.401 C4 C2 H8 120.542
C5 C3 H9 120.542 H6 C1 H7 108.205
H10 C4 H12 116.634 H11 C5 H13 116.634
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 -0.497      
2 C -0.176      
3 C -0.176      
4 C -0.391      
5 C -0.391      
6 H 0.217      
7 H 0.217      
8 H 0.209      
9 H 0.209      
10 H 0.199      
11 H 0.199      
12 H 0.191      
13 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.019 0.019
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.463 1.292 0.000
y 1.292 -31.732 0.000
z 0.000 0.000 -32.424
Traceless
 xyz
x 1.615 1.292 0.000
y 1.292 -0.288 0.000
z 0.000 0.000 -1.327
Polar
3z2-r2-2.654
x2-y21.269
xy1.292
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.422 3.083 0.000
y 3.083 8.923 0.000
z 0.000 0.000 4.812


<r2> (average value of r2) Å2
<r2> 157.166
(<r2>)1/2 12.537