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All results from a given calculation for C5H8 (2,3-Pentadiene)

using model chemistry: HF/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-32.045963
Energy at 298.15K-32.053310
Nuclear repulsion energy82.820703
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/CEP-121G*
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 3301 2982 23.66      
2 A 3276 2959 8.17      
3 A 3236 2924 47.31      
4 A 3182 2874 13.67      
5 A 1639 1481 3.57      
6 A 1616 1460 5.03      
7 A 1574 1422 0.39      
8 A 1538 1389 0.20      
9 A 1234 1115 0.13      
10 A 1185 1071 3.88      
11 A 1160 1048 2.69      
12 A 989 893 24.02      
13 A 874 790 0.12      
14 A 590 533 9.14      
15 A 318 287 0.78      
16 A 178 161 0.38      
17 A 151 136 1.98      
18 A 3300 2981 55.62      
19 A 3275 2959 24.47      
20 A 3237 2924 48.30      
21 A 3180 2873 124.74      
22 A 2176 1966 26.12      
23 A 1626 1469 5.56      
24 A 1616 1459 5.42      
25 A 1543 1394 12.04      
26 A 1417 1280 34.18      
27 A 1190 1075 3.60      
28 A 1159 1047 3.88      
29 A 1014 916 6.86      
30 A 781 705 15.39      
31 A 623 562 18.72      
32 A 251 227 1.84      
33 A 161 146 1.13      

Unscaled Zero Point Vibrational Energy (zpe) 26293.7 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 23753.8 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/CEP-121G*
ABC
0.57364 0.07444 0.07193

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.439
C2 0.000 1.304 0.438
C3 0.000 -1.304 0.438
C4 -0.884 2.170 -0.441
C5 0.884 -2.170 -0.441
H6 0.673 1.814 1.114
H7 -0.673 -1.814 1.114
H8 -1.519 2.810 0.169
H9 -0.278 2.818 -1.072
H10 -1.517 1.562 -1.078
H11 1.519 -2.810 0.169
H12 0.278 -2.818 -1.072
H13 1.517 -1.562 -1.078

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.30441.30442.50342.50342.04952.04953.20533.20942.65353.20533.20942.6535
C21.30442.60891.51823.69181.08163.26142.15532.15602.16004.39374.39883.5798
C31.30442.60893.69181.51823.26141.08164.39374.39883.57982.15532.15602.1600
C42.50341.51823.69184.68702.22944.28261.08791.08791.08445.56285.16024.4831
C52.50343.69181.51824.68704.28262.22945.56285.16024.48311.08791.08791.0844
H62.04951.08163.26142.22944.28263.87072.58662.58663.10874.79475.13704.1126
H72.04953.26141.08164.28262.22943.87074.79475.13704.11262.58662.58663.1087
H83.20532.15534.39371.08795.56282.58664.79471.75451.76356.38776.03605.4660
H93.20942.15604.39881.08795.16022.58665.13701.75451.76366.03605.66254.7330
H102.65352.16003.57981.08444.48313.10874.11261.76351.76365.46604.73304.3542
H113.20534.39372.15535.56281.08794.79472.58666.38776.03605.46601.75451.7635
H123.20944.39882.15605.16021.08795.13702.58666.03605.66254.73301.75451.7636
H132.65353.57982.16004.48311.08444.11263.10875.46604.73304.35421.76351.7636

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 124.805 C1 C2 H6 118.105
C1 C3 C5 124.805 C1 C3 H7 118.105
C2 C1 C3 179.921 C2 C4 H8 110.502
C2 C4 H9 110.558 C2 C4 H10 111.085
C3 C5 H11 110.502 C3 C5 H12 110.558
C3 C5 H13 111.085 C4 C2 H6 117.090
C5 C3 H7 117.090 H8 C4 H9 107.484
H8 C4 H10 108.547 H9 C4 H10 108.557
H11 C5 H12 107.484 H11 C5 H13 108.547
H12 C5 H13 108.557
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.225      
2 C -0.312      
3 C -0.312      
4 C -0.514      
5 C -0.514      
6 H 0.200      
7 H 0.200      
8 H 0.162      
9 H 0.161      
10 H 0.190      
11 H 0.162      
12 H 0.161      
13 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.217 0.217
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.500 -0.065 0.000
y -0.065 -28.080 0.000
z 0.000 0.000 -32.700
Traceless
 xyz
x -2.110 -0.065 0.000
y -0.065 4.520 0.000
z 0.000 0.000 -2.409
Polar
3z2-r2-4.819
x2-y2-4.420
xy-0.065
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.266 -0.878 0.000
y -0.878 13.937 0.000
z 0.000 0.000 6.182


<r2> (average value of r2) Å2
<r2> 141.398
(<r2>)1/2 11.891