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: BLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-305.858634
Energy at 298.15K-305.869583
Nuclear repulsion energy257.511801
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 BLYP/3-21G*
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' 3069 3049 30.26      
2 A' 3051 3031 28.36      
3 A' 3039 3019 15.18      
4 A' 2985 2966 22.49      
5 A' 2905 2886 105.50      
6 A' 2850 2832 82.54      
7 A' 1514 1504 8.11      
8 A' 1496 1486 1.08      
9 A' 1484 1475 5.00      
10 A' 1367 1358 16.19      
11 A' 1285 1276 3.21      
12 A' 1152 1145 4.50      
13 A' 1079 1072 39.85      
14 A' 1035 1028 71.39      
15 A' 938 932 44.66      
16 A' 844 839 3.19      
17 A' 780 775 10.45      
18 A' 594 590 4.50      
19 A' 463 460 0.83      
20 A' 404 401 11.94      
21 A' 258 256 2.03      
22 A" 3042 3022 40.53      
23 A" 2895 2876 21.40      
24 A" 1502 1492 1.21      
25 A" 1404 1395 4.67      
26 A" 1365 1356 0.16      
27 A" 1344 1335 4.36      
28 A" 1276 1268 0.18      
29 A" 1230 1222 9.73      
30 A" 1181 1173 4.95      
31 A" 991 984 1.37      
32 A" 913 907 30.48      
33 A" 886 881 75.46      
34 A" 813 807 19.92      
35 A" 434 432 8.23      
36 A" 239 237 1.86      

Unscaled Zero Point Vibrational Energy (zpe) 26051.9 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 25882.6 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 BLYP/3-21G*
ABC
0.15773 0.15095 0.08681

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.655 -1.234 0.000
O2 0.015 -0.793 1.226
O3 0.015 -0.793 -1.226
C4 0.015 0.696 1.263
C5 0.015 0.696 -1.263
C6 0.720 1.260 0.000
H7 -0.599 -2.329 0.000
H8 -1.709 -0.879 0.000
H9 0.546 0.967 2.186
H10 -1.026 1.080 1.311
H11 0.546 0.967 -2.186
H12 -1.026 1.080 -1.311
H13 1.768 0.924 0.000
H14 0.687 2.363 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.46531.46532.40222.40222.84801.09621.11313.32662.68513.32662.68513.24513.8395
O21.46532.45261.48952.90072.49302.05942.11772.07352.14403.87613.32052.74353.4520
O31.46532.45262.90071.48952.49302.05942.11773.87613.32052.07352.14402.74353.4520
C42.40221.48952.90072.52611.55253.33542.65521.09911.11053.50062.80272.17302.1968
C52.40222.90071.48952.52611.55253.33542.65523.50062.80271.09911.11052.17302.1968
C62.84802.49302.49301.55251.55253.82393.23692.21282.19092.21282.19091.10081.1038
H71.09622.05942.05943.33543.33543.82391.82624.11753.67674.11753.67674.02374.8654
H81.11312.11772.11772.65522.65523.23691.82623.64352.45363.64352.45363.91754.0316
H93.32662.07353.87611.09913.50062.21284.11753.64351.80364.37283.83612.50502.5983
H102.68512.14403.32051.11052.80272.19093.67672.45361.80363.83612.62133.09062.5101
H113.32663.87612.07353.50061.09912.21284.11753.64354.37283.83611.80362.50502.5983
H122.68513.32052.14402.80271.11052.19093.67672.45363.83612.62131.80363.09062.5101
H133.24512.74352.74352.17302.17301.10084.02373.91752.50503.09062.50503.09061.8002
H143.83953.45203.45202.19682.19681.10384.86544.03162.59832.51012.59832.51011.8002

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 108.774 C1 O3 C5 108.774
O2 C1 O3 113.631 O2 C1 H7 106.132
O2 C1 H8 109.686 O2 C4 C6 110.057
O2 C4 H9 105.459 O2 C4 H10 110.249
O3 C1 H7 106.132 O3 C1 H8 109.686
O3 C5 C6 110.057 O3 C5 H11 105.459
O3 C5 H12 110.249 C4 C6 C5 108.888
C4 C6 H13 108.772 C4 C6 H14 110.443
C5 C6 H13 108.772 C5 C6 H14 110.443
C6 C4 H9 111.995 C6 C4 H10 109.594
C6 C5 H11 111.995 C6 C5 H12 109.594
H7 C1 H8 111.508 H9 C4 H10 109.420
H11 C5 H12 109.420 H13 C6 H14 109.485
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.058      
2 O -0.424      
3 O -0.424      
4 C -0.143      
5 C -0.143      
6 C -0.383      
7 H 0.205      
8 H 0.154      
9 H 0.197      
10 H 0.164      
11 H 0.197      
12 H 0.164      
13 H 0.205      
14 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.748 1.986 0.000 2.122
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.932 1.782 0.000
y 1.782 -34.911 0.000
z 0.000 0.000 -38.976
Traceless
 xyz
x 1.011 1.782 0.000
y 1.782 2.543 0.000
z 0.000 0.000 -3.554
Polar
3z2-r2-7.109
x2-y2-1.021
xy1.782
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.149 0.546 0.000
y 0.546 7.525 0.000
z 0.000 0.000 6.795


<r2> (average value of r2) Å2
<r2> 145.712
(<r2>)1/2 12.071