return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H10O (2H-Pyran, tetrahydro-)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-270.889487
Energy at 298.15K-270.902496
HF Energy-270.016342
Nuclear repulsion energy260.030555
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 MP3/6-31G*
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' 3164 2970 38.99      
2 A' 3151 2957 51.14      
3 A' 3139 2946 30.78      
4 A' 3098 2908 10.50      
5 A' 3083 2894 24.00      
6 A' 3040 2853 83.69      
7 A' 1575 1478 3.94      
8 A' 1558 1462 4.76      
9 A' 1548 1453 6.60      
10 A' 1471 1381 9.48      
11 A' 1433 1345 0.69      
12 A' 1366 1283 3.43      
13 A' 1325 1243 5.40      
14 A' 1224 1149 3.46      
15 A' 1090 1023 7.71      
16 A' 1056 991 10.20      
17 A' 925 868 18.48      
18 A' 893 838 5.59      
19 A' 859 806 2.08      
20 A' 580 545 4.28      
21 A' 446 419 1.47      
22 A' 416 391 5.90      
23 A' 259 243 4.37      
24 A" 3162 2967 39.68      
25 A" 3145 2952 29.77      
26 A" 3098 2908 29.06      
27 A" 3035 2849 15.05      
28 A" 1559 1463 0.30      
29 A" 1538 1444 2.51      
30 A" 1439 1351 10.32      
31 A" 1434 1346 1.59      
32 A" 1395 1309 0.91      
33 A" 1338 1256 8.10      
34 A" 1275 1197 44.97      
35 A" 1228 1153 0.78      
36 A" 1183 1111 59.23      
37 A" 1101 1033 11.36      
38 A" 1015 953 2.95      
39 A" 920 864 1.03      
40 A" 848 796 0.44      
41 A" 470 441 0.01      
42 A" 249 233 0.55      

Unscaled Zero Point Vibrational Energy (zpe) 33064.6 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 31034.4 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 MP3/6-31G*
ABC
0.15593 0.15029 0.08687

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.676 -1.254 0.000
C2 0.632 1.320 0.000
H3 1.704 1.077 0.000
H4 0.555 2.413 0.000
C5 -0.019 0.729 1.255
C6 -0.019 0.729 -1.255
C7 -0.019 -0.796 -1.176
C8 -0.019 -0.796 1.176
H9 0.504 1.056 2.162
H10 0.504 1.056 -2.162
H11 -1.058 1.073 1.330
H12 -1.058 1.073 -1.330
H13 1.017 -1.175 -1.196
H14 1.017 -1.175 1.196
H15 -0.560 -1.241 -2.015
H16 -0.560 -1.241 2.015

Atom - Atom Distances (Å)
  O1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
O12.88713.33063.86792.43622.43621.42241.42243.37613.37612.70672.70672.07362.07362.01842.0184
C22.88711.09911.09571.53231.53232.50652.50652.18182.18182.16442.16442.79382.79383.47013.4701
H33.33061.09911.76242.15942.15942.80282.80282.47272.47273.06493.06492.64072.64073.81533.8153
H43.86791.09571.76242.17752.17753.46523.46522.55322.55322.48312.48313.81063.81064.31944.3194
C52.43621.53232.15942.17752.50922.86861.52621.09693.47161.09682.80653.27122.16813.85522.1796
C62.43621.53232.15942.17752.50921.52622.86863.47161.09692.80651.09682.16813.27122.17963.8552
C71.42242.50652.80283.46522.86861.52622.35133.85222.16183.29342.14311.10322.61521.09343.2667
C81.42242.50652.80283.46521.52622.86862.35132.16183.85222.14313.29342.61521.10323.26671.0934
H93.37612.18182.47272.55321.09693.47163.85222.16184.32371.76923.82484.06372.48494.88392.5354
H103.37612.18182.47272.55323.47161.09692.16183.85224.32373.82481.76922.48494.06372.53544.8839
H112.70672.16443.06492.48311.09682.80653.29342.14311.76923.82482.65963.96663.06174.09752.4640
H122.70672.16443.06492.48312.80651.09682.14313.29343.82481.76922.65963.06173.96662.46404.0975
H132.07362.79382.64073.81063.27122.16811.10322.61524.06372.48493.96663.06172.39111.77793.5773
H142.07362.79382.64073.81062.16813.27122.61521.10322.48494.06373.06173.96662.39113.57731.7779
H152.01843.47013.81534.31943.85522.17961.09343.26674.88392.53544.09752.46401.77793.57734.0301
H162.01843.47013.81534.31942.17963.85523.26671.09342.53544.88392.46404.09753.57731.77794.0301

picture of 2H-Pyran, tetrahydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C7 C6 111.373 O1 C7 H13 109.723
O1 C7 H15 105.954 O1 C8 C5 111.373
O1 C8 H14 109.723 O1 C8 H16 105.954
C2 C5 C8 110.078 C2 C5 H9 111.081
C2 C5 H11 109.711 C2 C6 C7 110.078
C2 C6 H10 111.081 C2 C6 H12 109.711
H3 C2 H4 106.841 H3 C2 C5 109.188
H3 C2 C6 109.188 H4 C2 C5 110.811
H4 C2 C6 110.811 C5 C2 C6 109.928
C5 C8 H14 110.047 C5 C8 H16 111.546
C6 C7 H13 110.047 C6 C7 H15 111.546
C7 O1 C8 111.480 C7 C6 H10 109.922
C7 C6 H12 108.470 C8 C5 H9 109.922
C8 C5 H11 108.470 H9 C5 H11 107.507
H10 C6 H12 107.507 H13 C7 H15 108.068
H14 C8 H16 108.068
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability