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 (2,3-Pentadiene)

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-194.009682
Energy at 298.15K-194.017067
HF Energy-194.009682
Nuclear repulsion energy153.326293
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/daug-cc-pVTZ
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 3275 2963 12.23      
2 A 3274 2962 27.38      
3 A 3241 2932 6.95      
4 A 3241 2931 20.11      
5 A 3200 2894 30.23      
6 A 3200 2894 30.12      
7 A 3156 2855 9.42      
8 A 3155 2854 97.17      
9 A 2198 1988 33.44      
10 A 1630 1474 4.61      
11 A 1610 1456 8.09      
12 A 1601 1448 4.96      
13 A 1600 1447 5.34      
14 A 1568 1418 0.09      
15 A 1531 1385 1.06      
16 A 1531 1385 9.42      
17 A 1420 1285 31.44      
18 A 1239 1121 0.16      
19 A 1188 1074 3.35      
20 A 1185 1072 3.17      
21 A 1163 1052 2.27      
22 A 1163 1052 3.10      
23 A 1017 920 9.92      
24 A 995 900 23.92      
25 A 878 794 0.10      
26 A 792 716 16.04      
27 A 623 563 17.31      
28 A 590 534 7.77      
29 A 323 293 0.93      
30 A 252 228 1.37      
31 A 185 168 0.12      
32 A 167 151 1.36      
33 A 152 137 2.10      

Unscaled Zero Point Vibrational Energy (zpe) 26169.4 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 23672.8 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 HF/daug-cc-pVTZ
ABC
0.58396 0.07544 0.07292

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.410 0.000
C2 1.234 0.411 0.390
C3 -1.234 0.412 -0.390
C4 2.321 -0.459 -0.184
C5 -2.321 -0.459 0.184
H6 1.513 1.085 1.183
H7 -1.513 1.085 -1.183
H8 3.119 0.150 -0.593
H9 2.754 -1.086 0.587
H10 1.938 -1.095 -0.970
H11 -3.120 0.150 0.593
H12 -2.753 -1.087 -0.587
H13 -1.938 -1.095 0.970

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.29391.29392.48492.48482.03572.03583.18613.18872.63863.18613.18852.6381
C21.29392.58781.50583.66521.07743.23612.14252.14312.14774.36614.37003.5587
C31.29392.58783.66531.50583.23621.07744.36594.37033.55912.14262.14312.1476
C42.48491.50583.66534.65592.21424.25211.08461.08461.08095.52925.12874.4577
C52.48483.66521.50584.65594.25212.21445.52905.12904.45781.08461.08461.0809
H62.03571.07743.23622.21424.25213.84112.57052.57083.09284.76315.10444.0875
H72.03583.23611.07744.25212.21443.84114.76285.10454.08792.57072.57113.0928
H83.18612.14254.36591.08465.52902.57054.76281.74831.75736.35106.00185.4378
H93.18872.14314.37031.08465.12902.57085.10451.74831.75756.00225.63104.7072
H102.63862.14773.55911.08094.45783.09284.08791.75731.75755.43814.70704.3339
H113.18614.36612.14265.52921.08464.76312.57076.35106.00225.43811.74831.7573
H123.18854.37002.14315.12871.08465.10442.57116.00185.63104.70701.74831.7575
H132.63813.55872.14764.45771.08094.08753.09285.43784.70724.33391.75731.7575

picture of 2,3-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.966 C1 C2 H6 118.005
C1 C3 C5 124.948 C1 C3 H7 118.012
C2 C1 C3 179.882 C2 C4 H8 110.545
C2 C4 H9 110.596 C2 C4 H10 111.190
C3 C5 H11 110.551 C3 C5 H12 110.598
C3 C5 H13 111.182 C4 C2 H6 117.029
C5 C3 H7 117.041 H8 C4 H9 107.410
H8 C4 H10 108.481 H9 C4 H10 108.503
H11 C5 H12 107.409 H11 C5 H13 108.481
H12 C5 H13 108.504
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.974      
2 C -0.584      
3 C -0.585      
4 C -0.861      
5 C -0.861      
6 H 0.266      
7 H 0.266      
8 H 0.228      
9 H 0.253      
10 H 0.212      
11 H 0.228      
12 H 0.253      
13 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 -0.223 -0.000 0.223
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.617 -0.000 1.163
y -0.000 -32.834 -0.000
z 1.163 -0.000 -32.311
Traceless
 xyz
x 3.956 -0.000 1.163
y -0.000 -2.370 -0.000
z 1.163 -0.000 -1.586
Polar
3z2-r2-3.172
x2-y24.217
xy-0.000
xz1.163
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 14.255 0.000 1.099
y 0.000 7.318 0.000
z 1.099 0.000 7.435


<r2> (average value of r2) Å2
<r2> 170.160
(<r2>)1/2 13.045