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All results from a given calculation for C5H10O (3-Pentanone)

using model chemistry: MP2=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/3-21G
 hartrees
Energy at 0K-269.120932
Energy at 298.15K 
HF Energy-268.527079
Nuclear repulsion energy237.040482
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=FULL/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 A1 3175 3031 23.62      
2 A1 3102 2962 2.16      
3 A1 3082 2943 16.17      
4 A1 1656 1581 11.97      
5 A1 1598 1526 5.87      
6 A1 1557 1486 21.40      
7 A1 1500 1432 8.24      
8 A1 1395 1332 8.53      
9 A1 1141 1089 3.37      
10 A1 1020 974 1.28      
11 A1 775 740 2.00      
12 A1 423 404 0.27      
13 A1 202 193 0.26      
14 A2 3183 3039 0.00      
15 A2 3111 2971 0.00      
16 A2 1601 1529 0.00      
17 A2 1333 1272 0.00      
18 A2 1076 1027 0.00      
19 A2 765 731 0.00      
20 A2 207 197 0.00      
21 A2 60 57 0.00      
22 B1 3183 3039 38.39      
23 B1 3120 2979 12.52      
24 B1 1601 1529 12.41      
25 B1 1367 1305 1.25      
26 B1 1200 1145 0.51      
27 B1 862 824 11.52      
28 B1 492 470 0.46      
29 B1 178 170 0.13      
30 B1 68 65 0.10      
31 B2 3175 3031 12.90      
32 B2 3102 2961 29.98      
33 B2 3075 2936 6.24      
34 B2 1598 1526 7.73      
35 B2 1554 1484 1.65      
36 B2 1500 1432 8.78      
37 B2 1402 1339 21.47      
38 B2 1156 1103 77.43      
39 B2 1062 1014 4.81      
40 B2 953 910 15.98      
41 B2 639 610 1.58      
42 B2 328 313 15.84      

Unscaled Zero Point Vibrational Energy (zpe) 31785.5 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 30348.8 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=FULL/3-21G
ABC
0.28659 0.06506 0.05520

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.298
C2 0.000 0.000 0.045
C3 0.000 1.303 -0.764
C4 0.000 -1.303 -0.764
C5 0.000 2.543 0.156
C6 0.000 -2.543 0.156
H7 0.882 1.302 -1.419
H8 -0.882 1.302 -1.419
H9 -0.882 -1.302 -1.419
H10 0.882 -1.302 -1.419
H11 0.000 3.463 -0.438
H12 -0.883 2.534 0.800
H13 0.883 2.534 0.800
H14 0.000 -3.463 -0.438
H15 0.883 -2.534 0.800
H16 -0.883 -2.534 0.800

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O11.25362.43952.43952.78812.78813.13953.13953.13953.13953.87352.72992.72993.87352.72992.7299
C21.25361.53341.53342.54552.54552.14832.14832.14832.14833.49602.78802.78803.49602.78802.7880
C32.43951.53342.60511.54433.95411.09861.09862.82642.82642.18452.17782.17784.77624.23654.2365
C42.43951.53342.60513.95411.54432.82642.82641.09861.09864.77624.23654.23652.18452.17782.1778
C52.78812.54551.54433.95415.08622.19052.19054.24724.24721.09431.09321.09326.03495.19395.1939
C62.78812.54553.95411.54435.08624.24724.24722.19052.19056.03495.19395.19391.09431.09321.0932
H73.13952.14831.09862.82642.19054.24721.76443.14492.60332.53183.09162.53794.94354.43144.7701
H83.13952.14831.09862.82642.19054.24721.76442.60333.14492.53182.53793.09164.94354.77014.4314
H93.13952.14832.82641.09864.24722.19053.14492.60331.76444.94354.43144.77012.53183.09162.5379
H103.13952.14832.82641.09864.24722.19052.60333.14491.76444.94354.77014.43142.53182.53793.0916
H113.87353.49602.18454.77621.09436.03492.53182.53184.94354.94351.78121.78126.92506.18676.1867
H122.72992.78802.17784.23651.09325.19393.09162.53794.43144.77011.78121.76656.18675.36795.0689
H132.72992.78802.17784.23651.09325.19392.53793.09164.77014.43141.78121.76656.18675.06895.3679
H143.87353.49604.77622.18456.03491.09434.94354.94352.53182.53186.92506.18676.18671.78121.7812
H152.72992.78804.23652.17785.19391.09324.43144.77013.09162.53796.18675.36795.06891.78121.7665
H162.72992.78804.23652.17785.19391.09324.77014.43142.53793.09166.18675.06895.36791.78121.7665

picture of 3-Pentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 121.847 O1 C2 C4 121.847
C2 C3 C5 111.601 C2 C3 H7 108.285
C2 C3 H8 108.285 C2 C4 C6 111.601
C2 C4 H9 108.285 C2 C4 H10 108.285
C3 C2 C4 116.306 C3 C5 H11 110.608
C3 C5 H12 110.151 C3 C5 H13 110.151
C4 C6 H14 110.608 C4 C6 H15 110.151
C4 C6 H16 110.151 C5 C3 H7 110.829
C5 C3 H8 110.829 C6 C4 H9 110.829
C6 C4 H10 110.829 H7 C3 H8 106.840
H9 C4 H10 106.840 H11 C5 H12 109.034
H11 C5 H13 109.034 H12 C5 H13 107.802
H14 C6 H15 109.034 H14 C6 H16 109.034
H15 C6 H16 107.802
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability