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 (1,2-Pentadiene)

using model chemistry: LSDA/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at LSDA/6-31G
 hartrees
Energy at 0K-194.118927
Energy at 298.15K-194.126248
Nuclear repulsion energy156.967629
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 LSDA/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 3157 3093 3.87      
2 A 3092 3029 23.33      
3 A 3081 3018 2.71      
4 A 3080 3017 7.91      
5 A 3079 3016 21.79      
6 A 2992 2931 16.28      
7 A 2990 2929 14.94      
8 A 2956 2896 30.19      
9 A 2076 2034 27.85      
10 A 1482 1452 12.95      
11 A 1472 1443 0.50      
12 A 1472 1442 13.81      
13 A 1454 1424 9.51      
14 A 1398 1370 14.67      
15 A 1359 1331 3.39      
16 A 1327 1300 4.18      
17 A 1255 1229 0.06      
18 A 1165 1141 4.44      
19 A 1094 1072 1.06      
20 A 1089 1067 2.58      
21 A 1016 996 1.21      
22 A 1006 985 3.06      
23 A 894 875 16.12      
24 A 886 868 73.74      
25 A 882 864 7.70      
26 A 793 777 8.37      
27 A 641 628 1.52      
28 A 532 521 5.92      
29 A 364 356 4.31      
30 A 344 337 7.22      
31 A 246 241 0.33      
32 A 153 150 0.31      
33 A 104 102 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 24462.4 cm-1
Scaled (by 0.9797) Zero Point Vibrational Energy (zpe) 23965.8 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 LSDA/6-31G
ABC
0.33816 0.10924 0.08673

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.386 0.481 0.000
C2 1.445 -1.032 -0.000
C3 -0.010 1.025 -0.000
C4 -1.098 0.290 -0.001
C5 -2.183 -0.443 0.000
H6 1.927 0.886 -0.881
H7 1.926 0.886 0.881
H8 0.931 -1.443 0.887
H9 2.485 -1.398 -0.000
H10 0.931 -1.443 -0.888
H11 -0.110 2.122 0.000
H12 -2.665 -0.768 0.931
H13 -2.667 -0.769 -0.929

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51421.49902.49103.68671.11011.11012.16732.17682.16722.22064.33994.3417
C21.51422.52002.86543.67492.16512.16511.10461.10271.10463.51614.22164.2230
C31.49902.52001.31252.62222.13252.13242.78723.47862.78721.10063.33583.3372
C42.49102.86541.31251.30973.20563.20582.81233.96022.81192.08052.10792.1081
C53.68673.67492.62221.30974.40824.40763.38864.76423.38923.29731.09701.0970
H61.11012.16512.13253.20564.40821.76213.08932.51122.53312.54015.20564.8827
H71.11012.16512.13243.20584.40761.76212.53302.51133.08932.53994.87995.2067
H82.16731.10462.78722.81233.38863.08932.53301.78961.77483.81833.65884.0861
H92.17681.10273.47863.96024.76422.51122.51131.78961.78964.37315.27065.2722
H102.16721.10462.78722.81193.38922.53313.08931.77481.78963.81844.08583.6609
H112.22063.51611.10062.08053.29732.54012.53993.81834.37313.81843.96723.9687
H124.33994.22163.33582.10791.09705.20564.87993.65885.27064.08583.96721.8596
H134.34174.22303.33722.10811.09704.88275.20674.08615.27223.66093.96871.8596

picture of 1,2-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H8 110.735 C1 C2 H9 111.612
C1 C2 H10 110.734 C1 C3 C4 124.626
C1 C3 H11 116.514 C2 C1 C3 113.510
C2 C1 H6 110.234 C2 C1 H7 110.234
C3 C1 H6 108.724 C3 C1 H7 108.718
C3 C4 C5 179.901 C4 C3 H11 118.859
C4 C5 H12 122.041 C4 C5 H13 122.057
H6 C1 H7 105.060 H8 C2 H9 108.344
H8 C2 H10 106.908 H9 C2 H10 108.345
H12 C5 H13 115.902
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.337      
2 C -0.505      
3 C -0.276      
4 C 0.247      
5 C -0.515      
6 H 0.176      
7 H 0.176      
8 H 0.174      
9 H 0.161      
10 H 0.174      
11 H 0.173      
12 H 0.176      
13 H 0.176      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.420 0.066 0.001 0.425
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.781 1.798 -0.001
y 1.798 -30.992 0.000
z -0.001 0.000 -31.651
Traceless
 xyz
x 1.540 1.798 -0.001
y 1.798 -0.275 0.000
z -0.001 0.000 -1.265
Polar
3z2-r2-2.529
x2-y21.210
xy1.798
xz-0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.038 2.430 0.000
y 2.430 7.225 0.000
z 0.000 0.000 5.469


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000