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

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-194.646771
Energy at 298.15K-194.654327
HF Energy-193.960902
Nuclear repulsion energy155.531361
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 MP2/6-31G**
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 3337 3125 13.65      
2 A 3244 3038 3.48      
3 A 3231 3026 5.26      
4 A 3107 2910 20.66      
5 A 1739 1628 0.45      
6 A 1528 1431 4.88      
7 A 1493 1398 0.01      
8 A 1346 1260 0.02      
9 A 1294 1212 0.09      
10 A 1107 1037 2.06      
11 A 1043 977 13.46      
12 A 940 881 6.00      
13 A 933 874 30.23      
14 A 689 645 7.83      
15 A 375 351 0.44      
16 A 306 286 0.12      
17 A 87 82 0.01      
18 A 3337 3125 17.05      
19 A 3243 3037 9.40      
20 A 3231 3026 20.96      
21 A 3165 2964 14.48      
22 A 1729 1619 8.79      
23 A 1498 1403 2.24      
24 A 1358 1271 0.13      
25 A 1330 1246 4.99      
26 A 1204 1128 2.39      
27 A 1044 978 16.61      
28 A 999 936 1.97      
29 A 933 874 31.11      
30 A 915 857 5.67      
31 A 616 577 9.63      
32 A 458 429 2.31      
33 A 99 93 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25479.4 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 23861.5 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 MP2/6-31G**
ABC
0.64932 0.07925 0.07866

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.680
C2 0.000 1.241 -0.170
C3 0.000 -1.241 -0.170
C4 0.989 2.141 -0.190
C5 -0.989 -2.141 -0.190
H6 -0.881 -0.011 1.328
H7 0.881 0.011 1.328
H8 -0.862 1.376 -0.815
H9 0.862 -1.376 -0.815
H10 0.950 3.011 -0.830
H11 -0.950 -3.011 -0.830
H12 1.863 2.030 0.438
H13 -1.863 -2.030 0.438

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.50331.50332.51382.51381.09361.09362.20712.20713.49983.49982.76602.7660
C21.50332.48111.33773.52352.14112.12831.08552.82972.11514.40632.11273.8128
C31.50332.48113.52351.33772.12832.14112.82971.08554.40632.11513.81282.1127
C42.51381.33773.52354.71723.22982.61822.09783.57501.08065.54221.08235.0920
C52.51383.52351.33774.71722.61823.22983.57502.09785.54221.08065.09201.0823
H61.09362.14112.12833.22982.61821.76132.55323.08124.14023.69643.53352.4154
H71.09362.12832.14112.61823.22981.76133.08122.55323.69644.14022.41543.5335
H82.20711.08552.82972.09783.57502.55323.08123.24752.44024.38823.06973.7652
H92.20712.82971.08553.57502.09783.08122.55323.24754.38822.44023.76523.0697
H103.49982.11514.40631.08065.54224.14023.69642.44024.38826.31471.84525.9105
H113.49984.40632.11515.54221.08063.69644.14024.38822.44026.31475.91051.8452
H122.76602.11273.81281.08235.09203.53352.41543.06973.76521.84525.91055.5108
H132.76603.81282.11275.09201.08232.41543.53353.76523.06975.91051.84525.5108

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 124.363 C1 C2 H8 116.054
C1 C3 C5 124.363 C1 C3 H9 116.054
C2 C1 C3 111.222 C2 C1 H6 110.071
C2 C1 H7 109.061 C2 C4 H10 121.632
C2 C4 H12 121.260 C3 C1 H6 109.061
C3 C1 H7 110.071 C3 C5 H11 121.632
C3 C5 H13 121.260 C4 C2 H8 119.567
C5 C3 H9 119.567 H6 C1 H7 107.273
H10 C4 H12 117.108 H11 C5 H13 117.108
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.275      
2 C -0.089      
3 C -0.089      
4 C -0.289      
5 C -0.289      
6 H 0.130      
7 H 0.130      
8 H 0.137      
9 H 0.137      
10 H 0.128      
11 H 0.128      
12 H 0.121      
13 H 0.121      


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 0.041 0.041
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.643 0.890 0.000
y 0.890 -31.933 0.000
z 0.000 0.000 -32.443
Traceless
 xyz
x 1.545 0.890 0.000
y 0.890 -0.390 0.000
z 0.000 0.000 -1.155
Polar
3z2-r2-2.309
x2-y21.290
xy0.890
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.644 2.703 0.000
y 2.703 9.091 0.000
z 0.000 0.000 5.298


<r2> (average value of r2) Å2
<r2> 157.164
(<r2>)1/2 12.537