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All results from a given calculation for C5H10O (Pentanal)

using model chemistry: QCISD/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at QCISD/STO-3G
 hartrees
Energy at 0K-267.107173
Energy at 298.15K-267.117512
Nuclear repulsion energy224.682161
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 QCISD/STO-3G
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' 3439 3439 4.09      
2 A' 3309 3309 8.30      
3 A' 3303 3303 1.98      
4 A' 3294 3294 2.69      
5 A' 3277 3277 3.65      
6 A' 3200 3200 41.71      
7 A' 1761 1761 23.57      
8 A' 1701 1701 0.28      
9 A' 1688 1688 0.20      
10 A' 1674 1674 1.82      
11 A' 1665 1665 0.84      
12 A' 1591 1591 0.43      
13 A' 1568 1568 0.23      
14 A' 1500 1500 1.71      
15 A' 1461 1461 33.98      
16 A' 1390 1390 1.63      
17 A' 1223 1223 4.37      
18 A' 1161 1161 0.88      
19 A' 1132 1132 2.05      
20 A' 995 995 0.22      
21 A' 960 960 4.17      
22 A' 677 677 6.49      
23 A' 408 408 0.49      
24 A' 289 289 0.95      
25 A' 134 134 1.18      
26 A" 3439 3439 6.07      
27 A" 3412 3412 9.76      
28 A" 3400 3400 0.17      
29 A" 3390 3390 1.45      
30 A" 1690 1690 1.23      
31 A" 1436 1436 0.01      
32 A" 1418 1418 0.00      
33 A" 1350 1350 0.00      
34 A" 1216 1216 0.07      
35 A" 1030 1030 0.40      
36 A" 888 888 0.12      
37 A" 791 791 1.33      
38 A" 727 727 2.34      
39 A" 232 232 0.00      
40 A" 141 141 0.32      
41 A" 104 104 0.44      
42 A" 59 59 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 33761.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 33761.7 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 QCISD/STO-3G
ABC
0.31886 0.04669 0.04204

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.818 -2.132 0.000
C2 -0.420 -1.160 0.000
C3 0.000 0.351 0.000
C4 -1.244 1.310 0.000
C5 -0.825 2.820 0.000
O6 2.027 -1.755 0.000
H7 0.539 -3.228 0.000
H8 -1.044 -1.387 0.896
H9 -1.044 -1.387 -0.896
H10 0.629 0.558 -0.896
H11 0.629 0.558 0.896
H12 -1.871 1.100 0.897
H13 -1.871 1.100 -0.897
H14 -1.723 3.475 0.000
H15 -0.219 3.059 -0.901
H16 -0.219 3.059 0.901

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.57332.61434.01245.21761.26701.13102.19642.19642.84152.84154.29914.29916.15625.36995.3699
C21.57331.56842.60444.00092.51762.27941.11561.11562.20332.20332.83232.83234.81544.31924.3192
C32.61431.56841.57062.60332.92253.61962.21662.21661.11451.11452.20602.20603.56802.86242.8624
C44.01242.60441.57061.56664.48204.87612.84932.84932.20852.20851.11481.11482.21742.21812.2181
C55.21764.00092.60331.56665.39076.20034.30694.30692.83502.83502.20362.20361.11171.11171.1117
O61.26702.51762.92254.48205.39072.09443.22003.22002.84652.84654.91404.91406.43535.38755.3875
H71.13102.27943.61964.87616.20032.09442.58842.58843.89163.89165.03495.03497.07506.39676.3967
H82.19641.11562.21662.84934.30693.22002.58841.79273.12962.56532.62113.17614.99054.86604.5221
H92.19641.11562.21662.84934.30693.22002.58841.79272.56533.12963.17612.62114.99054.52214.8660
H102.84152.20331.11452.20852.83502.84653.89163.12962.56531.79273.12442.55823.85362.64143.1946
H112.84152.20331.11452.20852.83502.84653.89162.56533.12961.79272.55823.12443.85363.19462.6414
H124.29912.83232.20601.11482.20364.91405.03492.62113.17613.12442.55821.79482.54303.13032.5625
H134.29912.83232.20601.11482.20364.91405.03493.17612.62112.55823.12441.79482.54302.56253.1303
H146.15624.81543.56802.21741.11176.43537.07504.99054.99053.85363.85362.54302.54301.80211.8021
H155.36994.31922.86242.21811.11175.38756.39674.86604.52212.64143.19463.13032.56251.80211.8010
H165.36994.31922.86242.21811.11175.38756.39674.52214.86603.19462.64142.56253.13031.80211.8010

picture of Pentanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.638 C1 C2 H8 108.336
C1 C2 H9 108.336 C2 C1 O6 124.498
C2 C1 H7 113.892 C2 C3 C4 112.134
C2 C3 H10 109.251 C2 C3 H11 109.251
C3 C2 H8 110.209 C3 C2 H9 110.209
C3 C4 C5 112.157 C3 C4 H12 109.294
C3 C4 H13 109.294 C4 C3 H10 109.497
C4 C3 H11 109.497 C4 C5 H14 110.620
C4 C5 H15 110.675 C4 C5 H16 110.675
C5 C4 H12 109.375 C5 C4 H13 109.375
O6 C1 H7 121.610 H8 C2 H9 106.923
H10 C3 H11 107.077 H12 C4 H13 107.218
H14 C5 H15 108.293 H14 C5 H16 108.293
H15 C5 H16 108.194
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability