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 C4H8O2 (1,3-Dioxane)

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-303.640595
Energy at 298.15K-303.651504
Nuclear repulsion energy258.058993
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 B3PW91/STO-3G
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' 3485 3084 0.79      
2 A' 3423 3030 4.74      
3 A' 3392 3001 2.13      
4 A' 3366 2979 0.30      
5 A' 3278 2901 20.63      
6 A' 3188 2822 34.53      
7 A' 1655 1464 1.06      
8 A' 1642 1453 2.34      
9 A' 1612 1426 1.98      
10 A' 1513 1339 23.72      
11 A' 1392 1232 3.96      
12 A' 1257 1113 5.65      
13 A' 1214 1074 38.65      
14 A' 1144 1013 1.08      
15 A' 1017 900 16.25      
16 A' 963 852 2.56      
17 A' 897 794 0.60      
18 A' 637 564 3.10      
19 A' 490 434 1.81      
20 A' 430 380 8.08      
21 A' 245 217 1.11      
22 A" 3421 3028 0.52      
23 A" 3276 2899 9.93      
24 A" 1645 1456 0.00      
25 A" 1523 1348 13.37      
26 A" 1491 1319 0.34      
27 A" 1433 1268 9.07      
28 A" 1388 1228 0.28      
29 A" 1317 1166 13.84      
30 A" 1274 1128 0.14      
31 A" 1174 1039 25.57      
32 A" 1100 973 22.32      
33 A" 970 859 7.50      
34 A" 965 854 6.51      
35 A" 487 431 3.26      
36 A" 267 237 1.73      

Unscaled Zero Point Vibrational Energy (zpe) 28983.9 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 25650.8 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 B3PW91/STO-3G
ABC
0.16019 0.15008 0.08739

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.675 -1.183 0.000
O2 0.026 -0.804 1.229
O3 0.026 -0.804 -1.229
C4 0.026 0.666 1.266
C5 0.026 0.666 -1.266
C6 0.708 1.269 0.000
H7 -0.718 -2.295 0.000
H8 -1.720 -0.767 0.000
H9 0.576 0.954 2.183
H10 -1.013 1.060 1.345
H11 0.576 0.954 -2.183
H12 -1.013 1.060 -1.345
H13 1.779 1.012 0.000
H14 0.611 2.367 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.46481.46482.34832.34832.81561.11251.12423.30132.63733.30132.63733.29283.7762
O21.46482.45761.47062.89532.50422.07042.13512.07442.13713.87713.34332.80713.4505
O31.46482.45762.89531.47062.50422.07042.13513.87713.34332.07442.13712.80713.4505
C42.34831.47062.89532.53121.55903.30512.58911.10751.11423.50382.83722.18972.1992
C52.34832.89531.47062.53121.55903.30512.58913.50382.83721.10751.11422.18972.1992
C62.81562.50422.50421.55901.55903.83843.16872.20932.19482.20932.19481.10121.1024
H71.11252.07042.07043.30513.30513.83841.82724.12243.62664.12243.62664.14344.8476
H81.12422.13512.13512.58912.58913.16871.82723.60512.37613.60512.37613.92513.9059
H93.30132.07443.87711.10753.50382.20934.12243.60511.79974.36553.87062.49312.6003
H102.63732.13713.34331.11422.83722.19483.62662.37611.79973.87062.68983.10002.4813
H113.30133.87712.07443.50381.10752.20934.12243.60514.36553.87061.79972.49312.6003
H122.63733.34332.13712.83721.11422.19483.62662.37613.87062.68981.79973.10002.4813
H133.29282.80712.80712.18972.18971.10124.14343.92512.49313.10002.49313.10001.7890
H143.77623.45053.45052.19922.19921.10244.84763.90592.60032.48132.60032.48131.7890

picture of 1,3-Dioxane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C4 106.259 C1 O3 C5 106.259
O2 C1 O3 114.038 O2 C1 H7 106.086
O2 C1 H8 110.415 O2 C4 C6 111.469
O2 C4 H9 106.293 O2 C4 H10 110.794
O3 C1 H7 106.086 O3 C1 H8 110.415
O3 C5 C6 111.469 O3 C5 H11 106.293
O3 C5 H12 110.794 C4 C6 C5 108.544
C4 C6 H13 109.600 C4 C6 H14 110.269
C5 C6 H13 109.600 C5 C6 H14 110.269
C6 C4 H9 110.760 C6 C4 H10 109.247
C6 C5 H11 110.760 C6 C5 H12 109.247
H7 C1 H8 109.552 H9 C4 H10 108.204
H11 C5 H12 108.204 H13 C6 H14 108.551
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.023      
2 O -0.189      
3 O -0.189      
4 C -0.059      
5 C -0.059      
6 C -0.157      
7 H 0.091      
8 H 0.064      
9 H 0.086      
10 H 0.068      
11 H 0.086      
12 H 0.068      
13 H 0.086      
14 H 0.082      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.768 1.653 0.000 1.823
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.898 1.181 0.000
y 1.181 -33.020 0.000
z 0.000 0.000 -36.070
Traceless
 xyz
x 1.647 1.181 0.000
y 1.181 1.464 0.000
z 0.000 0.000 -3.111
Polar
3z2-r2-6.222
x2-y20.122
xy1.181
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.383 0.441 0.000
y 0.441 4.536 0.000
z 0.000 0.000 4.065


<r2> (average value of r2) Å2
<r2> 143.527
(<r2>)1/2 11.980