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: LSDA/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/3-21G
 hartrees
Energy at 0K-193.131136
Energy at 298.15K-193.138631
HF Energy-193.131136
Nuclear repulsion energy156.126472
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/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' 3178 3126 6.97      
2 A' 3101 3050 23.94      
3 A' 3086 3036 1.16      
4 A' 3082 3031 4.65      
5 A' 3076 3026 2.62      
6 A' 3066 3015 0.99      
7 A' 2972 2923 11.44      
8 A' 1692 1664 8.89      
9 A' 1647 1620 1.68      
10 A' 1486 1462 14.86      
11 A' 1458 1434 13.95      
12 A' 1401 1378 17.95      
13 A' 1391 1368 3.52      
14 A' 1315 1294 0.57      
15 A' 1283 1262 2.23      
16 A' 1190 1171 4.56      
17 A' 1063 1046 0.42      
18 A' 973 957 21.12      
19 A' 904 889 2.51      
20 A' 627 617 8.35      
21 A' 398 392 4.39      
22 A' 235 231 0.17      
23 A" 3025 2975 7.70      
24 A" 1480 1456 13.55      
25 A" 1050 1033 0.28      
26 A" 1014 997 17.14      
27 A" 969 953 0.67      
28 A" 909 894 72.47      
29 A" 788 775 7.26      
30 A" 634 623 42.93      
31 A" 347 342 0.21      
32 A" 168 165 0.04      
33 A" 127 124 1.35      

Unscaled Zero Point Vibrational Energy (zpe) 24565.8 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 24162.9 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/3-21G
ABC
0.52334 0.09015 0.07803

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.372 0.132 0.000
C2 1.076 -0.209 0.000
C3 0.000 0.749 0.000
C4 -1.314 0.461 0.000
C5 -1.913 -0.900 0.000
H6 2.678 1.185 0.000
H7 3.171 -0.616 0.000
H8 0.802 -1.273 0.000
H9 0.308 1.805 0.000
H10 -2.028 1.295 0.000
H11 -1.147 -1.694 0.000
H12 -2.558 -1.047 0.888
H13 -2.558 -1.047 -0.888

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.33992.45143.70064.40791.09701.09362.10662.65754.55193.96505.14625.1462
C21.33991.44132.48223.06852.12362.13321.09882.15563.44992.67413.83383.8338
C32.45141.44131.34492.52612.71373.45202.17591.09932.10052.69933.24903.2490
C43.70062.48221.34491.48754.05724.61162.73592.10571.09822.16132.14702.1470
C54.40793.06852.52611.48755.04295.09162.74113.49992.19801.10281.10741.1074
H61.09702.12362.71374.05725.04291.86693.09232.45054.70824.78815.76085.7608
H71.09362.13323.45204.61165.09161.86692.45763.74915.53904.45055.81285.8128
H82.10661.09882.17592.73592.74113.09232.45763.11743.82211.99483.48313.4831
H92.65752.15561.09932.10573.49992.45053.74913.11742.39113.78924.13874.1387
H104.55193.44992.10051.09822.19804.70825.53903.82212.39113.11582.55932.5593
H113.96502.67412.69932.16131.10284.78814.45051.99483.78923.11581.78831.7883
H125.14623.83383.24902.14701.10745.76085.81283.48314.13872.55931.78831.7769
H135.14623.83383.24902.14701.10745.76085.81283.48314.13872.55931.78831.7769

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 123.590 C1 C2 H8 119.170
C2 C1 H6 120.937 C2 C1 H7 122.152
C2 C3 C4 125.941 C2 C3 H9 115.429
C3 C2 H8 117.240 C3 C4 C5 126.149
C3 C4 H10 118.232 C4 C3 H9 118.630
C4 C5 H11 112.258 C4 C5 H12 110.817
C4 C5 H13 110.817 C5 C4 H10 115.619
H6 C1 H7 116.911 H11 C5 H12 108.015
H11 C5 H13 108.015 H12 C5 H13 106.698
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.420      
2 C -0.207      
3 C -0.199      
4 C -0.183      
5 C -0.691      
6 H 0.201      
7 H 0.206      
8 H 0.200      
9 H 0.198      
10 H 0.204      
11 H 0.222      
12 H 0.235      
13 H 0.235      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.569 -0.234 0.000 0.616
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.127 0.296 0.000
y 0.296 -28.961 0.000
z 0.000 0.000 -35.043
Traceless
 xyz
x 3.875 0.296 0.000
y 0.296 2.624 0.000
z 0.000 0.000 -6.499
Polar
3z2-r2-12.998
x2-y20.834
xy0.296
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.782 0.770 0.000
y 0.770 6.981 0.000
z 0.000 0.000 3.235


<r2> (average value of r2) Å2
<r2> 153.544
(<r2>)1/2 12.391