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All results from a given calculation for C5H10 (Cyclopentane)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-194.541793
Energy at 298.15K-194.553448
HF Energy-194.087135
Nuclear repulsion energy185.669707
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 MP2/3-21G
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 3172 3028 73.81      
2 A 3155 3012 14.17      
3 A 3155 3011 10.66      
4 A 3145 3002 6.43      
5 A 3137 2994 16.43      
6 A 3112 2971 31.06      
7 A 3098 2957 33.28      
8 A 3096 2955 11.26      
9 A 3093 2952 23.18      
10 A 3091 2951 18.45      
11 A 1608 1535 0.24      
12 A 1588 1516 6.05      
13 A 1586 1514 2.32      
14 A 1582 1510 3.77      
15 A 1578 1506 0.35      
16 A 1405 1341 0.02      
17 A 1404 1340 0.02      
18 A 1398 1335 0.42      
19 A 1380 1317 1.42      
20 A 1370 1307 0.25      
21 A 1339 1278 1.54      
22 A 1294 1235 0.23      
23 A 1267 1209 0.77      
24 A 1252 1195 0.30      
25 A 1212 1157 0.00      
26 A 1059 1011 0.21      
27 A 1051 1003 0.08      
28 A 1040 992 0.76      
29 A 1011 965 1.62      
30 A 903 862 2.12      
31 A 897 856 2.15      
32 A 883 843 0.89      
33 A 871 832 0.58      
34 A 845 807 0.16      
35 A 795 759 1.31      
36 A 632 603 0.16      
37 A 563 538 1.45      
38 A 269 257 0.00      
39 A 13 12 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 31674.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 30233.1 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 MP2/3-21G
ABC
0.21201 0.21194 0.12252

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.312 -1.231 0.265
C2 0.527 1.195 0.131
C3 -1.008 0.855 0.015
C4 -1.091 -0.706 -0.160
C5 1.269 -0.122 -0.251
H6 0.770 1.455 1.168
H7 0.812 2.036 -0.509
H8 -1.461 1.366 -0.840
H9 -1.539 1.171 0.919
H10 -1.257 -0.951 -1.216
H11 -1.904 -1.145 0.427
H12 0.534 -2.219 -0.150
H13 0.374 -1.284 1.359
H14 1.353 -0.199 -1.342
H15 2.271 -0.180 0.185

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15
C12.43992.48161.55741.55332.87063.39463.33353.10182.17522.22311.09471.09712.17582.2253
C22.43991.57642.51371.55981.09581.09442.21902.21053.09873.38703.42642.77132.19102.2217
C32.48161.57641.57332.49202.20242.23151.09441.09462.19982.22993.44392.88012.92083.4428
C41.55742.51371.57332.43283.14613.35562.21222.21081.09621.09452.22122.18872.76233.4208
C51.55331.55982.49202.43282.17942.22093.16433.30492.82733.40152.22442.17831.09701.0947
H62.87061.09582.20243.14612.17941.77543.00292.33933.94683.80213.91062.77433.06242.4272
H73.39461.09442.23153.35562.22091.77542.39202.88283.70084.28564.27943.83482.44622.7422
H83.33352.21901.09442.21223.16433.00292.39201.77172.35642.84764.16133.90273.25944.1675
H93.10182.21051.09462.21083.30492.33932.88281.77173.02312.39534.11513.14333.91854.1081
H102.17523.09872.19981.09622.82733.94683.70082.35643.02311.77682.44003.06622.71883.8731
H112.22313.38702.22991.09453.40153.80214.28562.84762.39531.77682.72632.46503.82554.2919
H121.09473.42643.44392.22122.22443.91064.27944.16134.11512.44002.72631.78252.48462.6998
H131.09712.77132.88012.18872.17832.77433.83483.90273.14333.06622.46501.78253.07162.4898
H142.17582.19102.92082.76231.09703.06242.44623.25943.91852.71883.82552.48463.07161.7817
H152.22532.22173.44283.42081.09472.42722.74224.16754.10813.87314.29192.69982.48981.7817

picture of Cyclopentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 C3 104.870 C1 C4 H10 108.877
C1 C4 H11 112.758 C1 C5 C2 103.212
C1 C5 H14 109.149 C1 C5 H15 113.223
C2 C3 C4 105.893 C2 C3 H8 111.084
C2 C3 H9 110.409 C2 C5 H14 109.890
C2 C5 H15 112.463 C3 C2 C5 105.232
C3 C2 H6 109.697 C3 C2 H7 112.076
C3 C4 H10 109.688 C3 C4 H11 112.165
C4 C1 C5 102.905 C4 C1 H12 112.595
C4 C1 H13 109.874 C4 C3 H8 110.764
C4 C3 H9 110.643 C5 C1 H12 113.149
C5 C1 H13 109.339 C5 C2 H6 109.056
C5 C2 H7 112.412 H6 C2 H7 108.306
H8 C3 H9 108.069 H10 C4 H11 108.401
H12 C1 H13 108.833 H14 C5 H15 108.768
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability