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: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-57.850461
Energy at 298.15K-57.861925
Nuclear repulsion energy146.787770
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/CEP-121G
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' 3349 3056 33.83      
2 A' 3290 3002 44.74      
3 A' 3243 2959 54.05      
4 A' 3178 2900 40.18      
5 A' 3148 2872 177.23      
6 A' 3130 2856 37.00      
7 A' 1655 1510 5.79      
8 A' 1637 1494 0.04      
9 A' 1615 1474 6.27      
10 A' 1529 1395 29.18      
11 A' 1413 1289 5.53      
12 A' 1302 1189 57.01      
13 A' 1275 1164 168.92      
14 A' 1190 1086 27.70      
15 A' 1067 974 55.95      
16 A' 969 884 7.93      
17 A' 886 808 19.21      
18 A' 688 627 9.65      
19 A' 513 468 1.09      
20 A' 403 368 18.36      
21 A' 258 235 5.45      
22 A" 3285 2998 54.20      
23 A" 3137 2863 25.00      
24 A" 1639 1495 3.85      
25 A" 1553 1417 16.45      
26 A" 1513 1380 0.60      
27 A" 1494 1363 0.56      
28 A" 1420 1296 1.71      
29 A" 1358 1239 35.13      
30 A" 1326 1210 4.74      
31 A" 1183 1079 64.48      
32 A" 1115 1018 76.79      
33 A" 987 900 15.04      
34 A" 939 857 18.01      
35 A" 474 433 12.98      
36 A" 247 225 3.80      

Unscaled Zero Point Vibrational Energy (zpe) 28702.2 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 26190.8 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 HF/CEP-121G
ABC
0.16102 0.15864 0.08916

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.601 -1.278 0.000
O2 0.010 -0.759 1.179
O3 0.010 -0.759 -1.179
C4 0.010 0.686 1.255
C5 0.010 0.686 -1.255
C6 0.676 1.273 0.000
H7 -0.449 -2.343 0.000
H8 -1.664 -1.030 0.000
H9 0.546 0.937 2.158
H10 -1.018 1.038 1.350
H11 0.546 0.937 -2.158
H12 -1.018 1.038 -1.350
H13 1.729 1.014 0.000
H14 0.594 2.357 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.42521.42522.41022.41022.85321.07511.09153.29872.71353.29872.71353.26843.8265
O21.42522.35701.44792.83102.44212.02652.06482.03122.07803.78143.26832.73663.3826
O31.42522.35702.83101.44792.44212.02652.06483.78143.26832.03122.07802.73663.3826
C42.41021.44792.83102.51091.53763.31102.70631.07961.09083.46462.82302.15392.1697
C52.41022.83101.44792.51091.53763.31102.70633.46462.82301.07961.09082.15392.1697
C62.85322.44212.44211.53761.53763.78693.28342.18802.17922.18802.17921.08441.0872
H71.07512.02652.02653.31103.31103.78691.78814.05043.68474.05043.68474.00144.8141
H81.09152.06482.06482.70632.70633.28341.78813.66232.55303.66232.55303.96104.0705
H93.29872.03123.78141.07963.46462.18804.05043.66231.76374.31643.84252.46232.5838
H102.71352.07803.26831.09082.82302.17923.68472.55301.76373.84252.70003.06132.4818
H113.29873.78142.03123.46461.07962.18804.05043.66234.31643.84251.76372.46232.5838
H122.71353.26832.07802.82301.09082.17923.68472.55303.84252.70001.76373.06132.4818
H133.26842.73662.73662.15392.15391.08444.00143.96102.46233.06132.46233.06131.7592
H143.82653.38263.38262.16972.16971.08724.81414.07052.58382.48182.58382.48181.7592

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 114.049 C1 O3 C5 114.049
O2 C1 O3 111.567 O2 C1 H7 107.463
O2 C1 H8 109.546 O2 C4 C6 109.731
O2 C4 H9 106.041 O2 C4 H10 109.069
O3 C1 H7 107.463 O3 C1 H8 109.546
O3 C5 C6 109.731 O3 C5 H11 106.041
O3 C5 H12 109.069 C4 C6 C5 109.465
C4 C6 H13 109.242 C4 C6 H14 110.328
C5 C6 H13 109.242 C5 C6 H14 110.328
C6 C4 H9 112.262 C6 C4 H10 110.870
C6 C5 H11 112.262 C6 C5 H12 110.870
H7 C1 H8 111.235 H9 C4 H10 108.714
H11 C5 H12 108.714 H13 C6 H14 108.208
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.056      
2 O -0.417      
3 O -0.417      
4 C -0.067      
5 C -0.067      
6 C -0.274      
7 H 0.177      
8 H 0.128      
9 H 0.168      
10 H 0.123      
11 H 0.168      
12 H 0.123      
13 H 0.158      
14 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.193 2.779 0.000 3.024
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.852 2.351 0.000
y 2.351 -34.986 0.000
z 0.000 0.000 -40.998
Traceless
 xyz
x 2.140 2.351 0.000
y 2.351 3.439 0.000
z 0.000 0.000 -5.579
Polar
3z2-r2-11.158
x2-y2-0.866
xy2.351
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.355 0.372 0.000
y 0.372 7.339 0.000
z 0.000 0.000 6.681


<r2> (average value of r2) Å2
<r2> 118.531
(<r2>)1/2 10.887