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: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-195.135346
Energy at 298.15K-195.142572
Nuclear repulsion energy154.578181
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 BLYP/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 3122 3099 13.79      
2 A 3059 3036 11.97      
3 A 3047 3024 42.03      
4 A 3045 3022 40.28      
5 A 3044 3021 23.39      
6 A 2974 2951 25.59      
7 A 2951 2929 28.15      
8 A 2930 2908 46.67      
9 A 2008 1993 20.59      
10 A 1510 1499 5.23      
11 A 1503 1491 6.45      
12 A 1496 1484 0.29      
13 A 1479 1468 3.27      
14 A 1421 1410 3.76      
15 A 1383 1372 13.60      
16 A 1316 1306 4.93      
17 A 1275 1265 0.01      
18 A 1152 1143 0.70      
19 A 1102 1094 1.97      
20 A 1075 1067 3.00      
21 A 1035 1028 0.11      
22 A 989 982 0.60      
23 A 894 887 12.97      
24 A 876 870 61.52      
25 A 822 815 2.03      
26 A 797 791 4.79      
27 A 628 624 1.51      
28 A 521 517 4.75      
29 A 355 352 3.00      
30 A 332 329 4.83      
31 A 234 232 0.09      
32 A 152 151 0.21      
33 A 89 88 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 24307.4 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 24122.7 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 BLYP/6-31G
ABC
0.33515 0.10297 0.08255

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.392 0.514 0.002
C2 -1.544 -1.024 -0.001
C3 0.053 1.020 -0.002
C4 1.142 0.270 0.000
C5 2.235 -0.472 0.001
H6 -1.907 0.940 0.887
H7 -1.914 0.945 -0.877
H8 -1.073 -1.467 -0.895
H9 -2.610 -1.311 0.004
H10 -1.064 -1.472 0.885
H11 0.168 2.114 -0.006
H12 2.716 -0.802 -0.927
H13 2.720 -0.796 0.929

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54591.53102.54573.75881.10911.10912.19812.19392.19842.23394.41254.4137
C21.54592.59422.98143.81942.18582.18591.10321.10311.10323.57434.36524.3701
C31.53102.59421.32242.64352.15412.15422.87233.53862.87131.09973.35643.3578
C42.54572.98141.32241.32113.24543.25022.95344.07072.94612.08582.11802.1181
C53.75883.81942.64351.32114.46534.47123.56854.91663.55853.31101.09591.0959
H61.10912.18582.15413.24544.46531.76413.10882.51772.55512.54575.26304.9419
H71.10912.18592.15423.25024.47121.76412.55392.51893.10912.54134.94855.2688
H82.19811.10322.87232.95343.56853.10882.55391.78681.77983.89233.84674.2615
H92.19391.10313.53864.07074.91662.51772.51891.78681.78684.40905.42995.4333
H102.19841.10322.87132.94613.55852.55513.10911.77981.78683.89464.24473.8435
H112.23393.57431.09972.08583.31102.54572.54133.89234.40903.89463.98053.9817
H124.41254.36523.35642.11801.09595.26304.94853.84675.42994.24473.98051.8562
H134.41374.37013.35782.11811.09594.94195.26884.26155.43333.84353.98171.8562

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 111.050 C1 C2 H9 110.719
C1 C2 H10 111.071 C1 C3 C4 126.134
C1 C3 H11 115.257 C2 C1 C3 114.942
C2 C1 H6 109.735 C2 C1 H7 109.746
C3 C1 H6 108.298 C3 C1 H7 108.303
C3 C4 C5 179.569 C4 C3 H11 118.608
C4 C5 H12 122.124 C4 C5 H13 122.128
H6 C1 H7 105.370 H8 C2 H9 108.163
H8 C2 H10 107.546 H9 C2 H10 108.161
H12 C5 H13 115.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.225      
2 C -0.365      
3 C -0.231      
4 C 0.233      
5 C -0.415      
6 H 0.124      
7 H 0.124      
8 H 0.128      
9 H 0.114      
10 H 0.128      
11 H 0.121      
12 H 0.131      
13 H 0.131      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.440 0.084 0.001 0.448
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.335 -1.568 0.001
y -1.568 -31.287 -0.000
z 0.001 -0.000 -31.822
Traceless
 xyz
x 1.219 -1.568 0.001
y -1.568 -0.208 -0.000
z 0.001 -0.000 -1.011
Polar
3z2-r2-2.023
x2-y20.951
xy-1.568
xz0.001
yz-0.000


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> 148.711
(<r2>)1/2 12.195