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: B3LYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-307.691144
Energy at 298.15K-307.702418
Nuclear repulsion energy264.810524
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 B3LYP/6-31G(2df,p)
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' 3113 3004 32.78      
2 A' 3098 2990 31.24      
3 A' 3089 2981 26.80      
4 A' 3042 2936 18.33      
5 A' 2961 2857 100.41      
6 A' 2903 2801 74.70      
7 A' 1512 1459 4.76      
8 A' 1498 1445 0.12      
9 A' 1468 1417 3.21      
10 A' 1415 1366 20.71      
11 A' 1320 1274 5.96      
12 A' 1212 1170 63.55      
13 A' 1181 1139 113.36      
14 A' 1116 1077 19.80      
15 A' 1009 974 32.70      
16 A' 914 882 11.61      
17 A' 847 817 10.18      
18 A' 650 627 3.40      
19 A' 492 475 0.43      
20 A' 430 415 9.16      
21 A' 263 254 1.56      
22 A" 3092 2984 45.10      
23 A" 2953 2850 20.11      
24 A" 1496 1444 4.62      
25 A" 1448 1397 13.37      
26 A" 1386 1338 1.39      
27 A" 1370 1322 0.32      
28 A" 1333 1287 0.97      
29 A" 1253 1209 29.42      
30 A" 1230 1187 0.03      
31 A" 1066 1029 46.27      
32 A" 1027 991 77.18      
33 A" 920 888 20.11      
34 A" 893 862 0.39      
35 A" 464 448 6.20      
36 A" 260 250 1.50      

Unscaled Zero Point Vibrational Energy (zpe) 26861.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 25920.8 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 B3LYP/6-31G(2df,p)
ABC
0.16670 0.16029 0.09175

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.617 -1.208 0.000
O2 0.016 -0.764 1.170
O3 0.016 -0.764 -1.170
C4 0.016 0.657 1.243
C5 0.016 0.657 -1.243
C6 0.681 1.254 0.000
H7 -0.561 -2.299 0.000
H8 -1.675 -0.877 0.000
H9 0.548 0.922 2.160
H10 -1.021 1.026 1.330
H11 0.548 0.922 -2.160
H12 -1.021 1.026 -1.330
H13 1.745 0.998 0.000
H14 0.589 2.346 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.40301.40302.32912.32912.78381.09181.10883.25022.63143.25022.63143.23223.7539
O21.40302.34101.42232.80052.42582.01502.06002.02612.07443.77103.24522.73193.3722
O31.40302.34102.80051.42232.42582.01502.06003.77103.24522.02612.07442.73193.3722
C42.32911.42232.80052.48621.53113.25792.59981.09301.10433.45512.79892.15662.1746
C52.32912.80051.42232.48621.53113.25792.59983.45512.79891.09301.10432.15662.1746
C62.78382.42582.42581.53111.53113.76423.17722.18992.17192.18992.17191.09491.0959
H71.09182.01502.01503.25793.25793.76421.80574.03403.61014.03403.61014.02374.7857
H81.10882.06002.06002.59982.59983.17721.80573.58442.41233.58442.41233.90073.9396
H93.25022.02613.77101.09303.45512.18994.03403.58441.77794.32093.82842.47122.5880
H102.63142.07443.24521.10432.79892.17193.61012.41231.77793.82842.66053.06942.4711
H113.25023.77102.02613.45511.09302.18994.03403.58444.32093.82841.77792.47122.5880
H122.63143.24522.07442.79891.10432.17193.61012.41233.82842.66051.77793.06942.4711
H133.23222.73192.73192.15662.15661.09494.02373.90072.47123.06942.47123.06941.7761
H143.75393.37223.37222.17462.17461.09594.78573.93962.58802.47112.58802.47111.7761

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 111.047 C1 O3 C5 111.047
O2 C1 O3 113.077 O2 C1 H7 107.079
O2 C1 H8 109.632 O2 C4 C6 110.395
O2 C4 H9 106.589 O2 C4 H10 109.740
O3 C1 H7 107.079 O3 C1 H8 109.632
O3 C5 C6 110.395 O3 C5 H11 106.589
O3 C5 H12 109.740 C4 C6 C5 108.567
C4 C6 H13 109.297 C4 C6 H14 110.661
C5 C6 H13 109.297 C5 C6 H14 110.661
C6 C4 H9 112.053 C6 C4 H10 109.950
C6 C5 H11 112.053 C6 C5 H12 109.950
H7 C1 H8 110.274 H9 C4 H10 108.024
H11 C5 H12 108.024 H13 C6 H14 108.336
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.022      
2 O -0.234      
3 O -0.234      
4 C -0.075      
5 C -0.075      
6 C -0.205      
7 H 0.118      
8 H 0.071      
9 H 0.112      
10 H 0.087      
11 H 0.112      
12 H 0.087      
13 H 0.116      
14 H 0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.589 1.745 0.000 1.842
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.656 1.463 0.000
y 1.463 -34.885 0.000
z 0.000 0.000 -38.372
Traceless
 xyz
x 0.972 1.463 0.000
y 1.463 2.129 0.000
z 0.000 0.000 -3.102
Polar
3z2-r2-6.203
x2-y2-0.771
xy1.463
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.742 0.493 0.000
y 0.493 7.769 0.000
z 0.000 0.000 7.291


<r2> (average value of r2) Å2
<r2> 139.355
(<r2>)1/2 11.805