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 (1,3-Pentadiene, (Z)-)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-195.250678
Energy at 298.15K-195.258128
HF Energy-195.250678
Nuclear repulsion energy155.719803
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 B3PW91/6-31G(2df,p)
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' 3245 3120 12.52      
2 A' 3173 3050 30.13      
3 A' 3165 3043 14.32      
4 A' 3153 3031 7.08      
5 A' 3147 3026 5.69      
6 A' 3135 3014 2.26      
7 A' 3031 2914 25.94      
8 A' 1729 1662 10.52      
9 A' 1672 1608 2.05      
10 A' 1483 1426 5.92      
11 A' 1464 1408 14.31      
12 A' 1408 1354 2.39      
13 A' 1387 1334 2.37      
14 A' 1314 1263 0.94      
15 A' 1287 1238 1.58      
16 A' 1186 1141 1.32      
17 A' 1056 1015 0.01      
18 A' 968 931 13.31      
19 A' 897 862 2.65      
20 A' 613 589 5.37      
21 A' 383 369 4.25      
22 A' 213 205 0.31      
23 A" 3084 2965 16.00      
24 A" 1472 1415 5.63      
25 A" 1052 1011 1.15      
26 A" 1047 1007 9.54      
27 A" 997 959 1.24      
28 A" 931 895 38.04      
29 A" 811 780 5.32      
30 A" 648 623 21.01      
31 A" 361 347 0.08      
32 A" 148 142 0.03      
33 A" 125 120 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 24892.4 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 23931.6 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 B3PW91/6-31G(2df,p)
ABC
0.53628 0.08796 0.07663

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.392 0.155 0.000
C2 1.104 -0.207 0.000
C3 0.000 0.734 0.000
C4 -1.310 0.446 0.000
C5 -1.952 -0.904 0.000
H6 2.687 1.201 0.000
H7 3.192 -0.577 0.000
H8 0.862 -1.268 0.000
H9 0.288 1.785 0.000
H10 -2.005 1.285 0.000
H11 -1.231 -1.723 0.000
H12 -2.599 -1.025 0.878
H13 -2.599 -1.025 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.33722.46113.71354.47091.08711.08472.08902.66164.54014.08025.20275.2027
C21.33721.45132.50153.13492.11822.12041.08802.15303.44922.78413.89283.8928
C32.46111.45131.34152.54822.72733.45122.17961.08952.07962.74853.25883.2588
C43.71352.50151.34151.49474.06794.61732.76672.08491.08922.17092.14382.1438
C54.47093.13492.54821.49475.09415.15462.83723.49962.18911.09181.09731.0973
H61.08712.11822.72734.06795.09411.84863.07012.46924.69334.88865.80225.8022
H71.08472.12043.45124.61735.15461.84862.43063.74385.52114.56885.87435.8743
H82.08901.08802.17962.76672.83723.07012.43063.10623.83862.14143.57843.5784
H92.66162.15301.08952.08493.49962.46923.74383.10622.34743.82294.12334.1233
H104.54013.44922.07961.08922.18914.69335.52113.83862.34743.10612.54122.5412
H114.08022.78412.74852.17091.09184.88864.56882.14143.82293.10611.76931.7693
H125.20273.89283.25882.14381.09735.80225.87433.57844.12332.54121.76931.7562
H135.20273.89283.25882.14381.09735.80225.87433.57844.12332.54121.76931.7562

picture of 1,3-Pentadiene, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 123.861 C1 C2 H8 118.587
C2 C1 H6 121.456 C2 C1 H7 121.858
C2 C3 C4 127.153 C2 C3 H9 115.115
C3 C2 H8 117.552 C3 C4 C5 127.832
C3 C4 H10 117.261 C4 C3 H9 117.733
C4 C5 H11 113.214 C4 C5 H12 110.666
C4 C5 H13 110.666 C5 C4 H10 114.907
H6 C1 H7 116.686 H11 C5 H12 107.846
H11 C5 H13 107.846 H12 C5 H13 106.307
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.377      
2 C -0.030      
3 C -0.082      
4 C -0.084      
5 C -0.496      
6 H 0.132      
7 H 0.139      
8 H 0.114      
9 H 0.111      
10 H 0.118      
11 H 0.148      
12 H 0.154      
13 H 0.154      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.509 -0.214 0.000 0.552
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.597 0.161 0.000
y 0.161 -29.162 0.000
z 0.000 0.000 -33.890
Traceless
 xyz
x 2.930 0.161 0.000
y 0.161 2.081 0.000
z 0.000 0.000 -5.011
Polar
3z2-r2-10.022
x2-y20.566
xy0.161
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 14.422 0.854 0.000
y 0.854 7.527 0.000
z 0.000 0.000 4.489


<r2> (average value of r2) Å2
<r2> 155.729
(<r2>)1/2 12.479