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All results from a given calculation for C5H10O (Pentanal)

using model chemistry: QCISD/6-31G**

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/6-31G**
 hartrees
Energy at 0K-270.989003
Energy at 298.15K-270.999881
Nuclear repulsion energy230.914855
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/6-31G**
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' 3184 2998 38.31      
2 A' 3112 2930 29.56      
3 A' 3101 2919 19.69      
4 A' 3087 2906 37.14      
5 A' 3081 2900 12.11      
6 A' 2991 2816 139.51      
7 A' 1825 1718 109.17      
8 A' 1568 1476 3.69      
9 A' 1554 1463 0.41      
10 A' 1545 1454 1.31      
11 A' 1518 1429 9.12      
12 A' 1473 1387 3.20      
13 A' 1470 1384 0.98      
14 A' 1456 1371 9.18      
15 A' 1416 1333 13.47      
16 A' 1318 1241 1.88      
17 A' 1171 1102 8.48      
18 A' 1111 1046 1.03      
19 A' 1074 1011 2.10      
20 A' 948 892 1.46      
21 A' 923 869 9.13      
22 A' 700 659 14.50      
23 A' 405 381 1.77      
24 A' 301 284 4.62      
25 A' 143 135 4.79      
26 A" 3181 2995 59.84      
27 A" 3160 2975 28.21      
28 A" 3123 2940 7.41      
29 A" 3117 2934 11.09      
30 A" 1558 1467 4.76      
31 A" 1367 1287 0.21      
32 A" 1350 1271 0.14      
33 A" 1279 1204 0.07      
34 A" 1194 1124 0.04      
35 A" 1002 944 0.76      
36 A" 880 829 0.00      
37 A" 764 719 0.90      
38 A" 695 654 1.69      
39 A" 256 241 0.00      
40 A" 169 159 1.37      
41 A" 113 106 0.98      
42 A" 74 70 2.30      

Unscaled Zero Point Vibrational Energy (zpe) 31877.6 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 30009.5 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/6-31G**
ABC
0.34158 0.04912 0.04434

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.811 -2.066 0.000
C2 -0.379 -1.134 0.000
C3 0.000 0.343 0.000
C4 -1.219 1.266 0.000
C5 -0.836 2.745 0.000
O6 1.973 -1.697 0.000
H7 0.566 -3.144 0.000
H8 -0.994 -1.386 0.872
H9 -0.994 -1.386 -0.872
H10 0.624 0.553 -0.873
H11 0.624 0.553 0.873
H12 -1.839 1.048 0.876
H13 -1.839 1.048 -0.876
H14 -1.720 3.384 0.000
H15 -0.242 2.992 -0.882
H16 -0.242 2.992 0.882

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.51122.54163.90125.08461.21911.10632.11682.11682.76632.76634.18124.18126.00865.24075.2407
C21.51121.52482.54253.90562.41852.22111.09661.09662.14742.14742.76752.76754.71274.22134.2213
C32.54161.52481.52882.54302.83863.53302.17652.17651.09311.09312.15522.15523.49352.80232.8023
C43.90122.54251.52881.52814.35564.75742.80022.80022.16022.16021.09491.09492.17662.17112.1711
C55.08463.90562.54301.52815.25596.05364.22464.22462.77442.77442.15722.15721.09081.09171.0917
O61.21912.41852.83864.35565.25592.01883.10843.10842.76512.76514.77864.77866.28165.26055.2605
H71.10632.22113.53304.75746.05362.01882.50702.50703.79913.79914.91144.91146.91676.25166.2516
H82.11681.09662.17652.80024.22463.10842.50701.74433.06912.52482.57603.11314.90284.77574.4419
H92.11681.09662.17652.80024.22463.10842.50701.74432.52483.06913.11312.57604.90284.44194.7757
H102.76632.14741.09312.16022.77442.76513.79913.06912.52481.74543.06062.51193.77762.58833.1269
H112.76632.14741.09312.16022.77442.76513.79912.52483.06911.74542.51193.06063.77763.12692.5883
H124.18122.76752.15521.09492.15724.77864.91142.57603.11313.06062.51191.75192.49783.06942.5162
H134.18122.76752.15521.09492.15724.77864.91143.11312.57602.51193.06061.75192.49782.51623.0694
H146.00864.71273.49352.17661.09086.28166.91674.90284.90283.77763.77762.49782.49781.76541.7654
H155.24074.22132.80232.17111.09175.26056.25164.77574.44192.58833.12693.06942.51621.76541.7637
H165.24074.22132.80232.17111.09175.26056.25164.44194.77573.12692.58832.51623.06941.76541.7637

picture of Pentanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.689 C1 C2 H8 107.467
C1 C2 H9 107.467 C2 C1 O6 124.353
C2 C1 H7 115.240 C2 C3 C4 112.741
C2 C3 H10 109.115 C2 C3 H11 109.115
C3 C2 H8 111.208 C3 C2 H9 111.208
C3 C4 C5 112.588 C3 C4 H12 109.341
C3 C4 H13 109.341 C4 C3 H10 109.840
C4 C3 H11 109.840 C4 C5 H14 111.335
C4 C5 H15 110.836 C4 C5 H16 110.836
C5 C4 H12 109.551 C5 C4 H13 109.551
O6 C1 H7 120.408 H8 C2 H9 105.364
H10 C3 H11 105.957 H12 C4 H13 106.269
H14 C5 H15 107.967 H14 C5 H16 107.967
H15 C5 H16 107.758
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability