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All results from a given calculation for CH2CHCH2CH2CH3 (1-pentene)

using model chemistry: B1B95/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/CEP-31G*
 hartrees
Energy at 0K-34.165939
Energy at 298.15K-34.175963
Nuclear repulsion energy95.384652
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 B1B95/CEP-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 3246 3107 30.31      
2 A 3169 3034 11.87      
3 A 3154 3019 76.51      
4 A 3151 3016 39.48      
5 A 3150 3016 48.29      
6 A 3127 2993 17.76      
7 A 3106 2973 3.15      
8 A 3074 2943 36.24      
9 A 3067 2936 41.76      
10 A 3054 2923 25.42      
11 A 1731 1657 13.01      
12 A 1501 1436 10.16      
13 A 1492 1428 9.03      
14 A 1485 1422 0.98      
15 A 1474 1411 4.88      
16 A 1433 1372 1.90      
17 A 1406 1346 3.70      
18 A 1372 1313 1.01      
19 A 1311 1255 0.36      
20 A 1302 1247 0.10      
21 A 1269 1215 2.18      
22 A 1249 1195 0.24      
23 A 1180 1129 0.81      
24 A 1109 1062 2.04      
25 A 1069 1024 0.71      
26 A 1032 988 18.40      
27 A 1016 973 9.88      
28 A 947 906 4.30      
29 A 936 895 61.88      
30 A 884 846 9.21      
31 A 847 811 1.97      
32 A 728 697 4.93      
33 A 640 612 14.70      
34 A 419 401 1.29      
35 A 372 356 0.33      
36 A 243 233 0.03      
37 A 221 212 0.15      
38 A 99 94 0.04      
39 A 88 84 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 30075.9 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 28788.7 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 B1B95/CEP-31G*
ABC
0.59249 0.06965 0.06867

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.496 -0.233 -0.306
C2 1.419 0.359 0.280
C3 0.068 -0.302 0.446
C4 -1.057 0.443 -0.309
C5 -2.436 -0.199 -0.072
H6 3.451 0.295 -0.411
H7 2.447 -1.257 -0.691
H8 1.512 1.389 0.648
H9 0.119 -1.349 0.106
H10 -0.196 -0.327 1.520
H11 -1.074 1.499 0.011
H12 -0.824 0.448 -1.388
H13 -3.230 0.335 -0.618
H14 -2.445 -1.250 -0.406
H15 -2.698 -0.189 1.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15
C11.36142.54283.61604.93721.09601.09562.12292.65833.25453.98063.55735.76205.04545.3551
C21.36141.51302.54593.91062.14732.14771.09752.15342.14872.75462.79654.73454.24134.2144
C32.54281.51301.54602.55873.54052.80492.23261.10221.10652.17672.17293.52312.81782.8225
C43.61602.54591.54601.53994.51093.91332.89962.18322.16361.10381.10322.19772.19192.1922
C54.93723.91062.55871.53995.91695.03454.31562.80712.75092.17842.17891.10191.10281.1033
H61.09602.14733.54054.51095.91691.86932.46503.75134.17354.70164.38776.68386.09496.3266
H71.09562.14772.80493.91335.03451.86933.10942.46283.56984.52693.75445.89654.90065.5199
H82.12291.09752.23262.89964.31562.46503.10943.11932.57362.66573.23825.01964.87164.5091
H92.65832.15341.10222.18322.80713.75132.46283.11931.77313.08962.52003.81752.61643.1744
H103.25452.14871.10652.16362.75094.17353.56982.57361.77312.52673.07453.77013.10172.5586
H113.98062.75462.17671.10382.17844.70164.52692.66573.08962.52671.76782.52933.10042.5420
H123.55732.79652.17291.10322.17894.38773.75443.23822.52003.07451.76782.52822.54453.1008
H135.76204.73453.52312.19771.10196.68385.89655.01963.81753.77012.52932.52821.78151.7820
H145.04544.24132.81782.19191.10286.09494.90064.87162.61643.10173.10042.54451.78151.7796
H155.35514.21442.82252.19221.10336.32665.51994.50913.17442.55862.54203.10081.78201.7796

picture of 1-pentene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 124.326 C1 C2 H8 118.994
C2 C1 H6 121.427 C2 C1 H7 121.505
C2 C3 C4 112.659 C2 C3 H9 109.862
C2 C3 H10 109.244 C3 C2 H8 116.672
C3 C4 C5 112.026 C3 C4 H11 109.322
C3 C4 H12 109.064 C4 C3 H9 109.923
C4 C3 H10 108.170 C4 C5 H13 111.509
C4 C5 H14 110.998 C4 C5 H15 110.994
C5 C4 H11 109.874 C5 C4 H12 109.947
H6 C1 H7 117.068 H9 C3 H10 106.795
H11 C4 H12 106.447 H13 C5 H14 107.807
H13 C5 H15 107.819 H14 C5 H15 107.542
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.615      
2 C -0.002      
3 C -0.371      
4 C -0.251      
5 C -0.402      
6 H 0.185      
7 H 0.236      
8 H 0.268      
9 H 0.167      
10 H 0.105      
11 H 0.129      
12 H 0.127      
13 H 0.173      
14 H 0.129      
15 H 0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.425 0.098 0.074 0.442
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.220 0.192 -0.709
y 0.192 -31.389 1.343
z -0.709 1.343 -33.390
Traceless
 xyz
x -0.831 0.192 -0.709
y 0.192 1.916 1.343
z -0.709 1.343 -1.085
Polar
3z2-r2-2.170
x2-y2-1.831
xy0.192
xz-0.709
yz1.343


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.587 -0.458 -0.897
y -0.458 6.870 0.457
z -0.897 0.457 6.304


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000