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All results from a given calculation for C5H8 (Cyclopentene)

using model chemistry: BLYP/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-311G*
 hartrees
Energy at 0K-195.252451
Energy at 298.15K-195.261230
Nuclear repulsion energy169.800953
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 BLYP/6-311G*
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' 3105 3098 37.94      
2 A' 3013 3006 56.97      
3 A' 2979 2971 70.41      
4 A' 2955 2948 6.26      
5 A' 2916 2909 43.63      
6 A' 1622 1618 2.01      
7 A' 1486 1482 2.25      
8 A' 1462 1459 1.03      
9 A' 1288 1284 0.60      
10 A' 1204 1201 1.40      
11 A' 1102 1099 0.09      
12 A' 1043 1040 5.68      
13 A' 942 940 0.83      
14 A' 871 869 0.58      
15 A' 796 794 0.53      
16 A' 686 684 31.17      
17 A' 606 605 15.45      
18 A' 128 128 0.20      
19 A" 3080 3073 14.94      
20 A" 2961 2953 49.37      
21 A" 2917 2910 62.11      
22 A" 1467 1463 1.51      
23 A" 1342 1339 1.22      
24 A" 1287 1284 0.01      
25 A" 1277 1274 2.53      
26 A" 1194 1191 0.07      
27 A" 1131 1128 1.21      
28 A" 1001 999 1.58      
29 A" 920 918 0.04      
30 A" 893 891 4.80      
31 A" 867 865 5.35      
32 A" 762 760 0.33      
33 A" 380 379 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 24841.2 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 24779.1 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 BLYP/6-311G*
ABC
0.23987 0.23729 0.12899

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.242 -1.221 0.000
C2 -0.062 -0.326 1.246
C3 -0.062 -0.326 -1.246
C4 -0.062 1.082 0.671
C5 -0.062 1.082 -0.671
H6 1.307 -1.499 0.000
H7 -0.335 -2.156 0.000
H8 -1.045 -0.563 1.693
H9 -1.045 -0.563 -1.693
H10 -0.097 1.976 1.298
H11 -0.097 1.976 -1.298
H12 0.678 -0.460 -2.051
H13 0.678 -0.460 2.051

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.56471.56472.41872.41871.10021.09882.22702.22703.46763.46762.23112.2311
C21.56472.49241.52092.37842.19222.23131.10583.10882.30253.43093.38241.1023
C31.56472.49242.37841.52092.19222.23133.10881.10583.43092.30251.10233.3824
C42.41871.52092.37841.34152.99833.31852.17253.04361.09242.16233.21532.1986
C52.41872.37841.52091.34152.99833.31853.04362.17252.16231.09242.19863.2153
H61.10022.19222.19222.99832.99831.76853.04593.04593.96683.96682.38402.3840
H71.09882.23132.23133.31853.31851.76852.43112.43114.33794.33792.84822.8482
H82.22701.10583.10882.17253.04363.04592.43113.38702.73924.03664.12381.7634
H92.22703.10881.10583.04362.17253.04592.43113.38704.03662.73921.76344.1238
H103.46762.30253.43091.09242.16233.96684.33792.73924.03662.59574.21372.6655
H113.46763.43092.30252.16231.09243.96684.33794.03662.73922.59572.66554.2137
H122.23113.38241.10233.21532.19862.38402.84824.12381.76344.21372.66554.1029
H132.23111.10233.38242.19863.21532.38402.84821.76344.12382.66554.21374.1029

picture of Cyclopentene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 103.219 C1 C2 H8 111.853
C1 C2 H13 112.399 C1 C3 C5 103.219
C1 C3 H9 111.853 C1 C3 H12 112.399
C2 C1 C3 105.578 C2 C1 H6 109.456
C2 C1 H7 112.627 C2 C4 C5 112.230
C2 C4 H10 122.699 C3 C1 H6 109.456
C3 C1 H7 112.627 C3 C5 C4 112.230
C3 C5 H11 122.699 C4 C2 H8 110.606
C4 C2 H13 112.920 C4 C5 H11 125.031
C5 C3 H9 110.606 C5 C3 H12 112.920
C5 C4 H10 125.031 H6 C1 H7 107.072
H8 C2 H13 105.991 H9 C3 H12 105.991
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.396      
2 C -0.401      
3 C -0.401      
4 C -0.157      
5 C -0.157      
6 H 0.198      
7 H 0.195      
8 H 0.195      
9 H 0.195      
10 H 0.169      
11 H 0.169      
12 H 0.196      
13 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.044 -0.153 0.000 0.159
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.069 -0.010 0.000
y -0.010 -31.768 0.000
z 0.000 0.000 -31.280
Traceless
 xyz
x -1.546 -0.010 0.000
y -0.010 0.407 0.000
z 0.000 0.000 1.139
Polar
3z2-r22.278
x2-y2-1.302
xy-0.010
xz0.000
yz0.000


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> 107.003
(<r2>)1/2 10.344