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All results from a given calculation for C5H8 (1,2-Pentadiene)

using model chemistry: HF/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-193.959288
Energy at 298.15K-193.966981
Nuclear repulsion energy157.300946
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/6-31G(2df,p)
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 3361 3044 5.43      
2 A 3286 2976 10.28      
3 A 3284 2973 8.41      
4 A 3246 2939 44.51      
5 A 3240 2934 48.06      
6 A 3179 2878 24.70      
7 A 3174 2874 23.44      
8 A 3155 2857 50.03      
9 A 2216 2007 45.40      
10 A 1620 1467 2.89      
11 A 1616 1463 1.84      
12 A 1613 1461 5.03      
13 A 1602 1451 0.72      
14 A 1543 1397 3.42      
15 A 1492 1351 24.16      
16 A 1464 1325 0.03      
17 A 1395 1263 0.26      
18 A 1231 1115 0.80      
19 A 1205 1091 3.29      
20 A 1173 1062 3.84      
21 A 1116 1010 1.01      
22 A 1061 961 0.16      
23 A 999 904 51.16      
24 A 998 904 12.95      
25 A 896 812 1.34      
26 A 849 769 1.90      
27 A 689 624 4.26      
28 A 578 524 2.62      
29 A 395 358 2.26      
30 A 376 341 5.54      
31 A 275 249 0.01      
32 A 167 151 0.18      
33 A 111 101 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 26302.3 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 23816.7 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 HF/6-31G(2df,p)
ABC
0.34612 0.10668 0.08549

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.364 0.514 0.000
C2 1.528 -1.002 -0.000
C3 -0.067 1.002 0.000
C4 -1.125 0.260 -0.001
C5 -2.190 -0.474 0.000
H6 1.867 0.937 -0.867
H7 1.867 0.937 0.868
H8 1.067 -1.446 0.876
H9 2.580 -1.268 -0.000
H10 1.067 -1.446 -0.877
H11 -0.206 2.073 0.000
H12 -2.650 -0.791 0.921
H13 -2.651 -0.791 -0.919

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52501.51182.50233.68881.08861.08862.16752.15732.16752.21274.31974.3211
C21.52502.56132.93793.75492.15152.15151.08521.08551.08523.53024.28294.2841
C31.51182.56131.29302.58632.12062.12052.83693.48712.83701.07943.27633.2775
C42.50232.93791.29301.29333.18833.18852.91294.00812.91282.03232.06792.0681
C53.68883.75492.58631.29334.38254.38213.50974.83573.51033.22821.07631.0763
H61.08862.15152.12063.18834.38251.73543.05972.47452.51392.51845.15614.8382
H71.08862.15152.12053.18854.38211.73542.51392.47453.05972.51834.83605.1570
H82.16751.08522.83692.91293.50973.05972.51391.75791.75313.84333.77414.1805
H92.15731.08553.48714.00814.83572.47452.47451.75791.75794.35035.33185.3331
H102.16751.08522.83702.91283.51032.51393.05971.75311.75793.84344.18043.7760
H112.21273.53021.07942.03233.22822.51842.51833.84334.35033.84343.87493.8761
H124.31974.28293.27632.06791.07635.15614.83603.77415.33184.18043.87491.8396
H134.32114.28413.27752.06811.07634.83825.15704.18055.33313.77603.87611.8396

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 111.166 C1 C2 H9 110.324
C1 C2 H10 111.166 C1 C3 C4 126.110
C1 C3 H11 116.287 C2 C1 C3 115.007
C2 C1 H6 109.686 C2 C1 H7 109.686
C3 C1 H6 108.168 C3 C1 H7 108.164
C3 C4 C5 179.545 C4 C3 H11 117.603
C4 C5 H12 121.276 C4 C5 H13 121.292
H6 C1 H7 105.708 H8 C2 H9 108.155
H8 C2 H10 107.753 H9 C2 H10 108.155
H12 C5 H13 117.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.234      
2 C -0.416      
3 C -0.303      
4 C 0.296      
5 C -0.501      
6 H 0.133      
7 H 0.133      
8 H 0.141      
9 H 0.133      
10 H 0.141      
11 H 0.153      
12 H 0.162      
13 H 0.162      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.401 0.094 0.001 0.412
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.326 1.873 -0.001
y 1.873 -31.377 0.000
z -0.001 0.000 -31.828
Traceless
 xyz
x 1.277 1.873 -0.001
y 1.873 -0.300 0.000
z -0.001 0.000 -0.976
Polar
3z2-r2-1.953
x2-y21.051
xy1.873
xz-0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.915 2.345 0.000
y 2.345 7.468 0.000
z 0.000 0.000 5.645


<r2> (average value of r2) Å2
<r2> 144.261
(<r2>)1/2 12.011