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All results from a given calculation for C5H8 (1,4-Pentadiene)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-194.639018
Energy at 298.15K-194.646535
HF Energy-193.946377
Nuclear repulsion energy154.756816
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 QCISD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3253 3098 18.39      
2 A 3176 3024 2.05      
3 A 3164 3013 8.30      
4 A 3045 2900 22.61      
5 A 1744 1661 0.41      
6 A 1531 1458 5.66      
7 A 1486 1415 0.06      
8 A 1345 1281 0.02      
9 A 1292 1231 0.04      
10 A 1111 1058 1.70      
11 A 1027 978 14.11      
12 A 935 890 10.20      
13 A 933 889 29.05      
14 A 682 650 7.69      
15 A 378 360 0.46      
16 A 303 288 0.14      
17 A 87 83 0.01      
18 A 3253 3098 22.53      
19 A 3175 3024 9.04      
20 A 3163 3013 28.96      
21 A 3087 2940 16.87      
22 A 1736 1653 10.96      
23 A 1493 1421 3.22      
24 A 1359 1294 0.45      
25 A 1335 1271 4.47      
26 A 1202 1145 2.43      
27 A 1028 979 16.71      
28 A 994 947 2.67      
29 A 933 889 32.85      
30 A 918 874 6.44      
31 A 612 583 9.74      
32 A 458 436 2.18      
33 A 96 91 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 25167.0 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 23966.6 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 QCISD/6-31G*
ABC
0.66160 0.07793 0.07732

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.667
C2 0.000 1.250 -0.181
C3 0.000 -1.250 -0.181
C4 0.970 2.173 -0.175
C5 -0.970 -2.173 -0.175
H6 -0.885 -0.008 1.322
H7 0.885 0.008 1.322
H8 -0.858 1.373 -0.845
H9 0.858 -1.373 -0.845
H10 0.926 3.054 -0.812
H11 -0.926 -3.054 -0.812
H12 1.843 2.082 0.470
H13 -1.843 -2.082 0.470

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51001.51002.52402.52401.10061.10062.21522.21523.51743.51742.78752.7875
C21.51002.49951.33873.55722.14982.14021.09252.83812.12414.44732.12443.8627
C31.51002.49953.55721.33872.14022.14982.83811.09254.44732.12413.86272.1244
C42.52401.33873.55724.75853.23052.63312.10503.60961.08815.59621.08985.1410
C52.52403.55721.33874.75852.63313.23053.60962.10505.59621.08815.14101.0898
H61.10062.14982.14023.23052.63311.76942.56943.09744.14833.71903.54052.4381
H71.10062.14022.14982.63313.23051.76943.09742.56943.71904.14832.43813.5405
H82.21521.09252.83812.10503.60962.56943.09743.23762.45214.42713.08723.8252
H92.21522.83811.09253.60962.10503.09742.56943.23764.42712.45213.82523.0872
H103.51742.12414.44731.08815.59624.14833.71902.45214.42716.38261.85205.9740
H113.51744.44732.12415.59621.08813.71904.14834.42712.45216.38265.97401.8520
H122.78752.12443.86271.08985.14103.54052.43813.08723.82521.85205.97405.5611
H132.78753.86272.12445.14101.08982.43813.54053.82523.08725.97401.85205.5611

picture of 1,4-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.639 C1 C2 H8 115.748
C1 C3 C5 124.639 C1 C3 H9 115.748
C2 C1 C3 111.717 C2 C1 H6 109.878
C2 C1 H7 109.127 C2 C4 H10 121.802
C2 C4 H12 121.698 C3 C1 H6 109.127
C3 C1 H7 109.878 C3 C5 H11 121.802
C3 C5 H13 121.698 C4 C2 H8 119.607
C5 C3 H9 119.607 H6 C1 H7 107.000
H10 C4 H12 116.499 H11 C5 H13 116.499
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at QCISD/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.385      
2 C -0.122      
3 C -0.122      
4 C -0.399      
5 C -0.399      
6 H 0.179      
7 H 0.179      
8 H 0.187      
9 H 0.187      
10 H 0.177      
11 H 0.177      
12 H 0.171      
13 H 0.171      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 154.859
(<r2>)1/2 12.444