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All results from a given calculation for C5H10O (Pentanal)

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-49.730583
Energy at 298.15K-49.741350
HF Energy-48.947508
Nuclear repulsion energy128.646805
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/CEP-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' 3178 3018 41.63      
2 A' 3104 2947 28.77      
3 A' 3084 2928 20.12      
4 A' 3080 2924 47.06      
5 A' 3070 2914 24.96      
6 A' 2981 2830 145.89      
7 A' 1755 1667 111.24      
8 A' 1534 1456 8.98      
9 A' 1520 1443 0.70      
10 A' 1515 1438 1.64      
11 A' 1488 1413 15.86      
12 A' 1450 1377 4.25      
13 A' 1444 1371 4.90      
14 A' 1409 1337 5.36      
15 A' 1392 1322 13.23      
16 A' 1288 1222 2.88      
17 A' 1159 1101 10.44      
18 A' 1106 1050 0.39      
19 A' 1068 1014 0.52      
20 A' 936 889 0.47      
21 A' 914 867 10.61      
22 A' 685 651 11.44      
23 A' 398 377 1.59      
24 A' 290 276 4.16      
25 A' 136 129 5.25      
26 A" 3182 3021 89.63      
27 A" 3170 3010 19.59      
28 A" 3139 2980 4.47      
29 A" 3125 2967 13.02      
30 A" 1529 1452 8.58      
31 A" 1359 1290 0.16      
32 A" 1339 1271 0.02      
33 A" 1258 1194 0.13      
34 A" 1162 1104 1.07      
35 A" 991 940 0.34      
36 A" 864 821 0.47      
37 A" 750 712 2.15      
38 A" 671 637 6.30      
39 A" 245 232 0.00      
40 A" 168 160 2.02      
41 A" 115 109 1.33      
42 A" 82 78 2.85      

Unscaled Zero Point Vibrational Energy (zpe) 31565.3 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 29968.1 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/CEP-31G*
ABC
0.33359 0.04818 0.04348

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.818 -2.084 0.000
C2 -0.382 -1.139 0.000
C3 0.000 0.352 0.000
C4 -1.239 1.273 0.000
C5 -0.845 2.767 0.000
O6 2.000 -1.716 0.000
H7 0.575 -3.177 0.000
H8 -1.001 -1.393 0.884
H9 -1.001 -1.393 -0.884
H10 0.627 0.565 -0.886
H11 0.627 0.565 0.886
H12 -1.860 1.051 0.890
H13 -1.860 1.051 -0.890
H14 -1.738 3.418 0.000
H15 -0.241 3.011 -0.893
H16 -0.241 3.011 0.893

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.52742.56993.93705.12871.23871.11932.13692.13692.80002.80004.21814.21816.06675.28015.2801
C21.52741.53892.55943.93352.45102.25161.10911.10912.16922.16922.78792.78794.75414.24704.2470
C32.56991.53891.54372.55892.87693.57552.19782.19781.10581.10582.17712.17713.52422.81522.8152
C43.93702.55941.54371.54564.40734.80542.81932.81932.18342.18341.10731.10732.20222.19392.1939
C55.12873.93352.55891.54565.30986.11164.25674.25672.79312.79312.18332.18331.10491.10521.1052
O61.23872.45102.87694.40735.30982.04123.14523.14522.80582.80584.83214.83216.35055.30695.3069
H71.11932.25163.57554.80546.11162.04122.53892.53893.84583.84584.95964.95966.98866.30506.3050
H82.13691.10912.19782.81934.25673.14522.53891.76903.10142.54672.59133.14044.94714.80984.4693
H92.13691.10912.19782.81934.25673.14522.53891.76902.54673.10143.14042.59134.94714.46934.8098
H102.80002.16921.10582.18342.79312.80583.84583.10142.54671.77113.09402.53413.81002.59533.1464
H112.80002.16921.10582.18342.79312.80583.84582.54673.10141.77112.53413.09403.81003.14642.5953
H124.21812.78792.17711.10732.18334.83214.95962.59133.14043.09402.53411.77912.53113.10452.5416
H134.21812.78792.17711.10732.18334.83214.95963.14042.59132.53413.09401.77912.53112.54163.1045
H146.06674.75413.52422.20221.10496.35056.98864.94714.94713.81003.81002.53112.53111.78991.7899
H155.28014.24702.81522.19391.10525.30696.30504.80984.46932.59533.14643.10452.54161.78991.7864
H165.28014.24702.81522.19391.10525.30696.30504.46934.80983.14642.59532.54163.10451.78991.7864

picture of Pentanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.881 C1 C2 H8 107.222
C1 C2 H9 107.222 C2 C1 O6 124.446
C2 C1 H7 115.724 C2 C3 C4 112.257
C2 C3 H10 109.110 C2 C3 H11 109.110
C3 C2 H8 111.154 C3 C2 H9 111.154
C3 C4 C5 111.855 C3 C4 H12 109.313
C3 C4 H13 109.313 C4 C3 H10 109.887
C4 C3 H11 109.887 C4 C5 H14 111.293
C4 C5 H15 110.622 C4 C5 H16 110.622
C5 C4 H12 109.664 C5 C4 H13 109.664
O6 C1 H7 119.830 H8 C2 H9 105.774
H10 C3 H11 106.414 H12 C4 H13 106.903
H14 C5 H15 108.172 H14 C5 H16 108.172
H15 C5 H16 107.840
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability