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All results from a given calculation for C5H10O (Pentanal)

using model chemistry: QCISD/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 QCISD/3-21G*
 hartrees
Energy at 0K-269.153647
Energy at 298.15K-269.164513
Nuclear repulsion energy228.488800
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/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' 3086 2966 33.36      
2 A' 3039 2921 22.90      
3 A' 3020 2903 14.42      
4 A' 3015 2897 26.63      
5 A' 3012 2895 5.44      
6 A' 2910 2796 137.36      
7 A' 1679 1613 47.24      
8 A' 1582 1521 5.98      
9 A' 1570 1509 2.33      
10 A' 1561 1500 0.99      
11 A' 1536 1476 13.59      
12 A' 1475 1418 3.33      
13 A' 1447 1391 5.39      
14 A' 1422 1366 0.56      
15 A' 1394 1340 8.30      
16 A' 1319 1268 13.71      
17 A' 1147 1102 13.98      
18 A' 1054 1013 2.47      
19 A' 1013 973 2.07      
20 A' 919 883 0.33      
21 A' 876 842 11.64      
22 A' 690 663 10.16      
23 A' 402 386 2.22      
24 A' 301 289 4.69      
25 A' 146 140 4.71      
26 A" 3090 2970 71.41      
27 A" 3078 2958 1.70      
28 A" 3044 2925 0.09      
29 A" 3040 2922 8.27      
30 A" 1578 1517 6.40      
31 A" 1376 1322 0.13      
32 A" 1361 1308 0.04      
33 A" 1286 1236 0.04      
34 A" 1194 1148 0.32      
35 A" 1020 980 0.67      
36 A" 891 857 0.35      
37 A" 770 740 0.87      
38 A" 708 680 5.19      
39 A" 250 241 0.00      
40 A" 188 180 1.16      
41 A" 113 109 1.28      
42 A" 71 69 1.42      

Unscaled Zero Point Vibrational Energy (zpe) 31334.6 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 30115.7 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/3-21G*
ABC
0.32273 0.04883 0.04381

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.776 -2.100 0.000
C2 -0.432 -1.159 0.000
C3 0.000 0.327 0.000
C4 -1.212 1.298 0.000
C5 -0.757 2.786 0.000
O6 1.958 -1.709 0.000
H7 0.524 -3.180 0.000
H8 -1.049 -1.385 0.887
H9 -1.049 -1.385 -0.887
H10 0.627 0.520 -0.884
H11 0.627 0.520 0.884
H12 -1.835 1.102 0.888
H13 -1.835 1.102 -0.888
H14 -1.623 3.463 0.000
H15 -0.148 2.998 -0.892
H16 -0.148 2.998 0.892

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.53062.54803.93675.12041.24511.10882.15122.15122.76842.76844.22574.22576.05845.25675.2567
C21.53061.54812.57843.95862.45202.23491.10381.10382.17302.17302.80562.80564.77384.26104.2610
C32.54801.54811.55302.57252.82453.54582.19542.19541.10071.10072.18092.18093.53132.81922.8192
C43.93672.57841.55301.55574.36914.80252.83082.83082.18422.18421.10221.10222.20392.19432.1943
C55.12043.95862.57251.55575.25076.10144.27424.27422.79882.79882.18752.18751.09971.10021.1002
O61.24512.45202.82454.36915.25072.05433.15173.15172.74152.74154.80364.80366.29075.23265.2326
H71.10882.23493.54584.80256.10142.05432.54582.54583.80473.80474.96854.96856.98146.27746.2774
H82.15121.10382.19542.83084.27423.15172.54581.77323.09412.53762.60853.15494.96234.81494.4745
H92.15121.10382.19542.83084.27423.15172.54581.77322.53763.09413.15492.60854.96234.47454.8149
H102.76842.17301.10072.18422.79882.74153.80473.09412.53761.76733.08892.53043.80952.59673.1456
H112.76842.17301.10072.18422.79882.74153.80472.53763.09411.76732.53043.08893.80953.14562.5967
H124.22572.80562.18091.10222.18754.80364.96852.60853.15493.08892.53041.77582.53153.09912.5373
H134.22572.80562.18091.10222.18754.80364.96853.15492.60852.53043.08891.77582.53152.53733.0991
H146.05844.77383.53132.20391.09976.29076.98144.96234.96233.80953.80952.53152.53151.78531.7853
H155.25674.26102.81922.19431.10025.23266.27744.81494.47452.59673.14563.09912.53731.78531.7834
H165.25674.26102.81922.19431.10025.23266.27744.47454.81493.14562.59672.53733.09911.78531.7834

picture of Pentanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 111.710 C1 C2 H8 108.398
C1 C2 H9 108.398 C2 C1 O6 123.779
C2 C1 H7 114.782 C2 C3 C4 112.495
C2 C3 H10 109.076 C2 C3 H11 109.076
C3 C2 H8 110.644 C3 C2 H9 110.644
C3 C4 C5 111.686 C3 C4 H12 109.263
C3 C4 H13 109.263 C4 C3 H10 109.610
C4 C3 H11 109.610 C4 C5 H14 111.023
C4 C5 H15 110.240 C4 C5 H16 110.240
C5 C4 H12 109.597 C5 C4 H13 109.597
O6 C1 H7 121.439 H8 C2 H9 106.885
H10 C3 H11 106.808 H12 C4 H13 107.333
H14 C5 H15 108.489 H14 C5 H16 108.489
H15 C5 H16 108.286
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability