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: HF/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HF/TZVP
 hartrees
Energy at 0K-270.107192
Energy at 298.15K-270.120447
HF Energy-270.107192
Nuclear repulsion energy261.655451
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 HF/TZVP
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' 3242 2946 43.43      
2 A' 3212 2918 113.98      
3 A' 3200 2908 62.41      
4 A' 3166 2876 12.96      
5 A' 3149 2861 34.69      
6 A' 3123 2837 101.50      
7 A' 1646 1496 2.49      
8 A' 1624 1476 5.97      
9 A' 1608 1461 4.64      
10 A' 1560 1417 14.25      
11 A' 1511 1373 0.53      
12 A' 1447 1315 6.25      
13 A' 1390 1263 5.88      
14 A' 1288 1170 4.12      
15 A' 1140 1036 10.05      
16 A' 1096 996 15.97      
17 A' 959 871 24.29      
18 A' 936 850 4.40      
19 A' 877 797 1.61      
20 A' 612 556 5.09      
21 A' 466 424 1.87      
22 A' 422 383 5.51      
23 A' 263 239 5.44      
24 A" 3238 2942 77.59      
25 A" 3203 2910 50.78      
26 A" 3165 2876 38.67      
27 A" 3112 2828 17.38      
28 A" 1630 1481 0.11      
29 A" 1602 1455 2.43      
30 A" 1525 1385 11.80      
31 A" 1509 1371 0.49      
32 A" 1474 1340 0.00      
33 A" 1411 1282 14.49      
34 A" 1347 1224 65.13      
35 A" 1296 1178 0.46      
36 A" 1235 1122 90.50      
37 A" 1132 1029 5.70      
38 A" 1063 966 2.81      
39 A" 941 855 1.66      
40 A" 889 808 1.24      
41 A" 498 452 0.00      
42 A" 254 231 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 34228.5 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 31100.0 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 HF/TZVP
ABC
0.15743 0.15217 0.08749

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.666 -1.246 0.000
C2 0.652 1.308 0.000
H3 1.698 1.010 0.000
H4 0.619 2.393 0.000
C5 -0.026 0.732 1.245
C6 -0.026 0.732 -1.245
C7 -0.026 -0.794 -1.170
C8 -0.026 -0.794 1.170
H9 0.471 1.055 2.155
H10 0.471 1.055 -2.155
H11 -1.057 1.070 1.283
H12 -1.057 1.070 -1.283
H13 0.998 -1.164 -1.185
H14 0.998 -1.164 1.185
H15 -0.556 -1.226 -2.010
H16 -0.556 -1.226 2.010

Atom - Atom Distances (Å)
  O1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
O12.87423.26743.85952.42312.42311.40801.40803.35123.35122.67652.67652.04362.04362.01342.0134
C22.87421.08711.08581.53051.53052.49962.49962.17772.17772.15062.15062.76302.76303.45273.4527
H33.26741.08711.75442.14442.14442.75582.75582.48052.48053.03973.03972.57302.57303.75743.7574
H43.85951.08581.75442.17422.17423.45613.45612.54142.54142.49122.49123.76863.76864.30344.3034
C52.42311.53052.14442.17422.49012.85661.52761.08603.45151.08632.75113.24722.15533.83532.1675
C62.42311.53052.14442.17422.49011.52762.85663.45151.08602.75111.08632.15533.24722.16753.8353
C71.40802.49962.75583.45612.85661.52762.34003.83702.15313.24892.13361.08832.59381.08313.2529
C81.40802.49962.75583.45611.52762.85662.34002.15313.83702.13363.24892.59381.08833.25291.0831
H93.35122.17772.48052.54141.08603.45153.83702.15314.31051.75963.76234.04422.47874.85862.5051
H103.35122.17772.48052.54143.45151.08602.15313.83704.31053.76231.75962.47874.04422.50514.8586
H112.67652.15063.03972.49121.08632.75113.24892.13361.75963.76232.56553.91183.03724.04572.4602
H122.67652.15063.03972.49122.75111.08632.13363.24893.76231.75962.56553.03723.91182.46024.0457
H132.04362.76302.57303.76863.24722.15531.08832.59384.04422.47873.91183.03722.36901.76013.5529
H142.04362.76302.57303.76862.15533.24722.59381.08832.47874.04423.03723.91182.36903.55291.7601
H152.01343.45273.75744.30343.83532.16751.08313.25294.85862.50514.04572.46021.76013.55294.0206
H162.01343.45273.75744.30342.16753.83533.25291.08312.50514.85862.46024.04573.55291.76014.0206

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 111.188 O1 C7 H13 109.224
O1 C7 H15 107.124 O1 C8 C5 111.188
O1 C8 H14 109.224 O1 C8 H16 107.124
C2 C5 C8 109.646 C2 C5 H9 111.545
C2 C5 H11 109.372 C2 C6 C7 109.646
C2 C6 H10 111.545 C2 C6 H12 109.372
H3 C2 H4 107.681 H3 C2 C5 108.836
H3 C2 C6 108.836 H4 C2 C5 111.271
H4 C2 C6 111.271 C5 C2 C6 108.881
C5 C8 H14 109.812 C5 C8 H16 111.100
C6 C7 H13 109.812 C6 C7 H15 111.100
C7 O1 C8 112.389 C7 C6 H10 109.776
C7 C6 H12 108.235 C8 C5 H9 109.776
C8 C5 H11 108.235 H9 C5 H11 108.196
H10 C6 H12 108.196 H13 C7 H15 108.303
H14 C8 H16 108.303
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.326      
2 C -0.147      
3 H 0.068      
4 H 0.092      
5 C -0.133      
6 C -0.133      
7 C -0.015      
8 C -0.015      
9 H 0.085      
10 H 0.085      
11 H 0.070      
12 H 0.070      
13 H 0.054      
14 H 0.054      
15 H 0.096      
16 H 0.096      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.153 1.202 0.000 1.666
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.363 -1.994 0.000
y -1.994 -40.832 0.000
z 0.000 0.000 -35.557
Traceless
 xyz
x -1.168 -1.994 0.000
y -1.994 -3.372 0.000
z 0.000 0.000 4.540
Polar
3z2-r29.080
x2-y21.469
xy-1.994
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.680 0.061 0.000
y 0.061 8.216 0.000
z 0.000 0.000 8.987


<r2> (average value of r2) Å2
<r2> 151.337
(<r2>)1/2 12.302