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All results from a given calculation for C5H8 (Cyclopentene)

using model chemistry: B3LYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/cc-pVTZ
 hartrees
Energy at 0K-195.399620
Energy at 298.15K-195.408563
Nuclear repulsion energy171.418719
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 B3LYP/cc-pVTZ
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' 3193 3086 23.31      
2 A' 3091 2987 42.69      
3 A' 3056 2954 55.56      
4 A' 3036 2935 3.85      
5 A' 2997 2897 31.41      
6 A' 1681 1624 2.46      
7 A' 1510 1460 2.06      
8 A' 1487 1437 1.05      
9 A' 1329 1284 0.81      
10 A' 1232 1191 1.53      
11 A' 1133 1095 0.09      
12 A' 1072 1036 7.25      
13 A' 973 941 0.95      
14 A' 902 872 0.50      
15 A' 820 792 0.93      
16 A' 716 692 31.46      
17 A' 620 599 11.60      
18 A' 134 130 0.18      
19 A" 3168 3062 8.10      
20 A" 3044 2942 37.58      
21 A" 2999 2899 53.11      
22 A" 1491 1441 2.00      
23 A" 1384 1338 1.65      
24 A" 1321 1277 0.12      
25 A" 1312 1268 2.12      
26 A" 1228 1187 0.03      
27 A" 1155 1116 1.38      
28 A" 1035 1000 2.14      
29 A" 980 947 0.05      
30 A" 918 887 6.56      
31 A" 892 862 4.26      
32 A" 786 760 0.34      
33 A" 394 381 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 25542.5 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 24689.4 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 B3LYP/cc-pVTZ
ABC
0.24433 0.24190 0.13154

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.248 -1.208 0.000
C2 -0.064 -0.324 1.234
C3 -0.064 -0.324 -1.234
C4 -0.064 1.072 0.664
C5 -0.064 1.072 -0.664
H6 1.307 -1.468 0.000
H7 -0.313 -2.141 0.000
H8 -1.041 -0.560 1.669
H9 -1.041 -0.560 -1.669
H10 -0.099 1.958 1.284
H11 -0.099 1.958 -1.284
H12 0.667 -0.456 -2.035
H13 0.667 -0.456 2.035

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54911.54912.39492.39491.09061.08922.20592.20593.43393.43392.20932.2093
C21.54912.46781.50812.35652.16982.21061.09573.07232.28333.39873.35201.0921
C31.54912.46782.35651.50812.16982.21063.07231.09573.39872.28331.09213.3520
C42.39491.50812.35651.32852.96143.29092.15183.01091.08192.14063.18662.1790
C52.39492.35651.50811.32852.96143.29093.01092.15182.14061.08192.17903.1866
H61.09062.16982.16982.96142.96141.75443.02033.02033.91953.91952.36082.3608
H71.08922.21062.21063.29093.29091.75442.41162.41164.30134.30132.81802.8180
H82.20591.09573.07232.15183.01093.02032.41163.33842.71643.99404.08021.7498
H92.20593.07231.09573.01092.15183.02032.41163.33843.99402.71641.74984.0802
H103.43392.28333.39871.08192.14063.91954.30132.71643.99402.56814.17502.6419
H113.43393.39872.28332.14061.08193.91954.30133.99402.71642.56812.64194.1750
H122.20933.35201.09213.18662.17902.36082.81804.08021.74984.17502.64194.0697
H132.20931.09213.35202.17903.18662.36082.81801.74984.08022.64194.17504.0697

picture of Cyclopentene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 103.130 C1 C2 H8 111.892
C1 C2 H13 112.389 C1 C3 C5 103.130
C1 C3 H9 111.892 C1 C3 H12 112.389
C2 C1 C3 105.596 C2 C1 H6 109.337
C2 C1 H7 112.669 C2 C4 C5 112.191
C2 C4 H10 122.817 C3 C1 H6 109.337
C3 C1 H7 112.669 C3 C5 C4 112.191
C3 C5 H11 122.817 C4 C2 H8 110.458
C4 C2 H13 112.879 C4 C5 H11 124.951
C5 C3 H9 110.458 C5 C3 H12 112.879
C5 C4 H10 124.951 H6 C1 H7 107.195
H8 C2 H13 106.224 H9 C3 H12 106.224
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.167     -0.115
2 C -0.148     0.202
3 C -0.148     0.202
4 C -0.141     -0.238
5 C -0.141     -0.238
6 H 0.088     0.032
7 H 0.089     0.005
8 H 0.086     -0.016
9 H 0.086     -0.016
10 H 0.112     0.120
11 H 0.112     0.120
12 H 0.087     -0.030
13 H 0.087     -0.030


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.050 -0.198 0.000 0.204
CHELPG        
AIM        
ESP -0.070 -0.225 0.000 0.236


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.764 -0.009 0.000
y -0.009 -31.628 0.000
z 0.000 0.000 -30.994
Traceless
 xyz
x -1.453 -0.009 0.000
y -0.009 0.251 0.000
z 0.000 0.000 1.202
Polar
3z2-r22.405
x2-y2-1.136
xy-0.009
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.406 -0.108 0.000
y -0.108 8.488 0.000
z 0.000 0.000 9.793


<r2> (average value of r2) Å2
<r2> 105.182
(<r2>)1/2 10.256