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: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-193.902597
Energy at 298.15K-193.910329
HF Energy-193.902597
Nuclear repulsion energy155.410993
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 HF/LANL2DZ
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' 3436 3092 42.75      
2 A' 3384 3045 25.66      
3 A' 3366 3029 48.83      
4 A' 3336 3002 16.74      
5 A' 3333 2999 9.09      
6 A' 3310 2979 20.02      
7 A' 3195 2875 58.25      
8 A' 1878 1690 14.20      
9 A' 1791 1612 9.07      
10 A' 1644 1479 11.56      
11 A' 1611 1450 13.58      
12 A' 1577 1419 5.63      
13 A' 1531 1378 0.98      
14 A' 1451 1306 0.59      
15 A' 1419 1277 2.73      
16 A' 1296 1167 2.65      
17 A' 1169 1052 0.03      
18 A' 1043 939 10.78      
19 A' 952 857 1.20      
20 A' 666 599 5.42      
21 A' 420 378 4.19      
22 A' 238 214 0.24      
23 A" 3256 2930 45.79      
24 A" 1637 1473 10.96      
25 A" 1197 1077 0.70      
26 A" 1153 1037 4.41      
27 A" 1132 1018 18.58      
28 A" 1099 989 88.85      
29 A" 895 805 16.48      
30 A" 710 639 44.64      
31 A" 404 364 0.58      
32 A" 126 113 0.03      
33 A" 109 98 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 26881.8 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 24191.0 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 HF/LANL2DZ
ABC
0.53113 0.08726 0.07599

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.402 0.138 0.000
C2 1.113 -0.221 0.000
C3 0.000 0.743 0.000
C4 -1.310 0.461 0.000
C5 -1.970 -0.897 0.000
H6 2.706 1.169 0.000
H7 3.189 -0.593 0.000
H8 0.868 -1.266 0.000
H9 0.292 1.780 0.000
H10 -1.994 1.293 0.000
H11 -1.261 -1.713 0.000
H12 -2.605 -1.007 0.874
H13 -2.605 -1.007 -0.874

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.33832.47753.72664.49281.07541.07362.07982.67434.54564.10405.21045.2104
C21.33831.47232.51713.15602.11412.10901.07422.16233.45592.80383.89943.8994
C32.47751.47231.34032.56342.73913.45752.18921.07642.06832.76103.25783.2578
C43.72662.51711.34031.50984.07804.62072.78002.07461.07682.17452.14362.1436
C54.49283.15602.56341.50985.11185.16732.86163.50402.19011.08081.08601.0860
H61.07542.11412.73914.07805.11181.82753.05142.49034.70154.90325.80565.8056
H71.07362.10903.45754.62075.16731.82752.41643.74495.51524.58825.87395.8739
H82.07981.07422.18922.78002.86163.05142.41643.10013.83932.17513.59073.5907
H92.67432.16231.07642.07463.50402.49033.74493.10012.33683.82204.11324.1132
H104.54563.45592.06831.07682.19014.70155.51523.83932.33683.09392.53492.5349
H114.10402.80382.76102.17451.08084.90324.58822.17513.82203.09391.75191.7519
H125.21043.89943.25782.14361.08605.80565.87393.59074.11322.53491.75191.7476
H135.21043.89943.25782.14361.08605.80565.87393.59074.11322.53491.75191.7476

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 123.577 C1 C2 H8 118.705
C2 C1 H6 121.916 C2 C1 H7 121.568
C2 C3 C4 126.937 C2 C3 H9 115.187
C3 C2 H8 117.719 C3 C4 C5 128.067
C3 C4 H10 117.260 C4 C3 H9 117.876
C4 C5 H11 113.108 C4 C5 H12 110.275
C4 C5 H13 110.275 C5 C4 H10 114.674
H6 C1 H7 116.516 H11 C5 H12 107.907
H11 C5 H13 107.907 H12 C5 H13 107.152
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.514      
2 C -0.069      
3 C -0.154      
4 C -0.134      
5 C -0.602      
6 H 0.179      
7 H 0.188      
8 H 0.181      
9 H 0.188      
10 H 0.182      
11 H 0.179      
12 H 0.187      
13 H 0.187      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.563 -0.228 0.000 0.608
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.372 0.268 0.000
y 0.268 -29.924 0.000
z 0.000 0.000 -36.295
Traceless
 xyz
x 3.738 0.268 0.000
y 0.268 2.910 0.000
z 0.000 0.000 -6.647
Polar
3z2-r2-13.295
x2-y20.552
xy0.268
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 14.467 1.183 0.000
y 1.183 6.453 0.000
z 0.000 0.000 4.038


<r2> (average value of r2) Å2
<r2> 157.480
(<r2>)1/2 12.549