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All results from a given calculation for C5H10O (Pentanal)

using model chemistry: CID/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 CID/3-21G*
 hartrees
Energy at 0K-269.040788
Energy at 298.15K-269.051816
Nuclear repulsion energy230.307779
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 CID/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' 3194 2972 33.18      
2 A' 3150 2931 21.12      
3 A' 3129 2911 7.68      
4 A' 3124 2907 33.39      
5 A' 3119 2902 10.07      
6 A' 3047 2835 122.48      
7 A' 1812 1686 68.20      
8 A' 1629 1515 7.67      
9 A' 1616 1504 2.69      
10 A' 1607 1495 1.20      
11 A' 1579 1469 14.82      
12 A' 1525 1419 4.42      
13 A' 1507 1402 6.67      
14 A' 1474 1372 0.58      
15 A' 1446 1346 10.24      
16 A' 1369 1274 16.62      
17 A' 1189 1106 16.03      
18 A' 1094 1018 2.63      
19 A' 1053 980 2.05      
20 A' 953 887 0.41      
21 A' 919 855 9.65      
22 A' 718 668 13.71      
23 A' 415 386 2.34      
24 A' 312 290 5.39      
25 A' 151 140 5.35      
26 A" 3201 2978 70.20      
27 A" 3188 2966 0.04      
28 A" 3152 2933 1.96      
29 A" 3147 2928 6.81      
30 A" 1624 1512 7.48      
31 A" 1421 1322 0.14      
32 A" 1406 1308 0.03      
33 A" 1330 1237 0.05      
34 A" 1242 1156 0.27      
35 A" 1058 984 0.86      
36 A" 924 860 0.42      
37 A" 795 740 1.04      
38 A" 728 678 5.96      
39 A" 255 237 0.01      
40 A" 191 178 1.60      
41 A" 116 108 1.47      
42 A" 73 68 1.81      

Unscaled Zero Point Vibrational Energy (zpe) 32488.5 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 30230.6 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 CID/3-21G*
ABC
0.33096 0.04936 0.04437

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.795 -2.076 0.000
C2 -0.409 -1.154 0.000
C3 0.000 0.329 0.000
C4 -1.217 1.277 0.000
C5 -0.787 2.761 0.000
O6 1.957 -1.686 0.000
H7 0.555 -3.148 0.000
H8 -1.020 -1.386 0.879
H9 -1.020 -1.386 -0.879
H10 0.620 0.528 -0.876
H11 0.620 0.528 0.876
H12 -1.833 1.075 0.880
H13 -1.833 1.075 -0.880
H14 -1.657 3.421 0.000
H15 -0.187 2.982 -0.884
H16 -0.187 2.982 0.884

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.51642.53293.91055.08951.22591.09792.13152.13152.75292.75294.19644.19646.01885.22845.2284
C21.51641.53832.56193.93352.42512.21451.09531.09532.15772.15772.78762.78764.74194.23594.2359
C32.53291.53831.54292.55662.80873.52052.18062.18061.09181.09182.16622.16623.50782.80342.8034
C43.91052.56191.54291.54524.34214.76642.81132.81132.16912.16911.09351.09352.18842.18002.1800
C55.08953.93352.55661.54525.22576.05944.24584.24582.78152.78152.17102.17101.09121.09171.0917
O61.22592.42512.80874.34215.22572.02513.11883.11882.73042.73044.77104.77106.25595.21285.2128
H71.09792.21453.52054.76646.05942.02512.52142.52143.77893.77894.93034.93036.93086.23796.2379
H82.13151.09532.18062.81134.24583.11882.52141.75733.07162.52092.59173.13234.92794.78434.4475
H92.13151.09532.18062.81134.24583.11882.52141.75732.52093.07163.13232.59174.92794.44754.7843
H102.75292.15771.09182.16912.78152.73043.77893.07162.52091.75253.06672.51373.78442.58403.1269
H112.75292.15771.09182.16912.78152.73043.77892.52093.07161.75252.51373.06673.78443.12692.5840
H124.19642.78762.16621.09352.17104.77104.93032.59173.13233.06672.51371.76082.51213.07652.5200
H134.19642.78762.16621.09352.17104.77104.93033.13232.59172.51373.06671.76082.51212.52003.0765
H146.01884.74193.50782.18841.09126.25596.93084.92794.92793.78443.78442.51212.51211.77041.7704
H155.22844.23592.80342.18001.09175.21286.23794.78434.44752.58403.12693.07652.52001.77041.7690
H165.22844.23592.80342.18001.09175.21286.23794.44754.78433.12692.58402.52003.07651.77041.7690

picture of Pentanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.025 C1 C2 H8 108.317
C1 C2 H9 108.317 C2 C1 O6 123.992
C2 C1 H7 114.845 C2 C3 C4 112.494
C2 C3 H10 109.068 C2 C3 H11 109.068
C3 C2 H8 110.655 C3 C2 H9 110.655
C3 C4 C5 111.764 C3 C4 H12 109.318
C3 C4 H13 109.318 C4 C3 H10 109.642
C4 C3 H11 109.642 C4 C5 H14 111.038
C4 C5 H15 110.349 C4 C5 H16 110.349
C5 C4 H12 109.540 C5 C4 H13 109.540
O6 C1 H7 121.163 H8 C2 H9 106.680
H10 C3 H11 106.757 H12 C4 H13 107.253
H14 C5 H15 108.393 H14 C5 H16 108.393
H15 C5 H16 108.235
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability