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 (1,4-Dioxane)

using model chemistry: B3LYPultrafine/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3LYPultrafine/cc-pVTZ
 hartrees
Energy at 0K-307.775949
Energy at 298.15K-307.787169
HF Energy-307.775949
Nuclear repulsion energy264.227531
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 B3LYPultrafine/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3082 2980 0.00      
2 Ag 2972 2873 0.00      
3 Ag 1497 1447 0.00      
4 Ag 1419 1372 0.00      
5 Ag 1327 1283 0.00      
6 Ag 1148 1110 0.00      
7 Ag 1018 984 0.00      
8 Ag 845 817 0.00      
9 Ag 441 426 0.00      
10 Ag 414 400 0.00      
11 Au 3080 2978 97.67      
12 Au 2965 2866 48.75      
13 Au 1484 1435 0.83      
14 Au 1390 1344 16.20      
15 Au 1282 1239 38.47      
16 Au 1136 1098 178.23      
17 Au 1107 1070 12.32      
18 Au 893 863 20.50      
19 Au 251 242 0.83      
20 Bg 3080 2978 0.00      
21 Bg 2977 2878 0.00      
22 Bg 1484 1434 0.00      
23 Bg 1364 1319 0.00      
24 Bg 1239 1198 0.00      
25 Bg 1130 1092 0.00      
26 Bg 863 834 0.00      
27 Bg 493 477 0.00      
28 Bu 3081 2979 48.29      
29 Bu 2982 2883 174.79      
30 Bu 1492 1442 12.31      
31 Bu 1412 1365 2.21      
32 Bu 1317 1273 10.87      
33 Bu 1066 1031 9.74      
34 Bu 885 856 68.35      
35 Bu 616 595 13.89      
36 Bu 265 257 17.56      

Unscaled Zero Point Vibrational Energy (zpe) 26748.5 cm-1
Scaled (by 0.9667) Zero Point Vibrational Energy (zpe) 25857.8 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 B3LYPultrafine/cc-pVTZ
ABC
0.16890 0.15690 0.09127

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.762 1.173
C2 0.000 0.762 -1.173
C3 0.000 -0.762 1.173
C4 0.000 -0.762 -1.173
O5 -0.621 -1.260 0.000
O6 0.621 1.260 0.000
H7 -1.035 1.124 1.238
H8 -1.035 1.124 -1.238
H9 1.035 -1.124 -1.238
H10 1.035 -1.124 1.238
H11 0.559 1.154 -2.023
H12 0.559 1.154 2.023
H13 -0.559 -1.154 -2.023
H14 -0.559 -1.154 2.023

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.34601.52312.79702.41831.41791.09872.64853.23082.15193.26841.09043.76782.1687
C22.34602.79701.52312.41831.41792.64851.09872.15193.23081.09043.26842.16873.7678
C31.52312.79702.34601.41792.41832.15193.23082.64851.09873.76782.16873.26841.0904
C42.79701.52312.34601.41792.41833.23082.15191.09872.64852.16873.76781.09043.2684
O52.41832.41831.41791.41792.80962.71762.71762.07242.07243.36333.36332.02712.0271
O61.41791.41792.41832.41832.80962.07242.07242.71762.71762.02712.02713.36333.3633
H71.09872.64852.15193.23082.71762.07242.47543.93283.05603.62981.77734.00602.4559
H82.64851.09873.23082.15192.71762.07242.47543.05603.93281.77733.62982.45594.0060
H93.23082.15192.64851.09872.07242.71763.93283.05602.47542.45594.00601.77733.6298
H102.15193.23081.09872.64852.07242.71763.05603.93282.47544.00602.45593.62981.7773
H113.26841.09043.76782.16873.36332.02713.62981.77732.45594.00604.04662.56364.7903
H121.09043.26842.16873.76783.36332.02711.77733.62984.00602.45594.04664.79032.5636
H133.76782.16873.26841.09042.02713.36334.00602.45591.77733.62982.56364.79034.0466
H142.16873.76781.09043.26842.02713.36332.45594.00603.62981.77734.79032.56364.0466

picture of 1,4-Dioxane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 O5 110.579 C1 C3 H10 109.252
C1 C3 H14 111.077 C1 O6 C2 111.643
C2 C4 O5 110.579 C2 C4 H9 109.252
C2 C4 H13 111.077 C3 C1 O6 110.579
C3 C1 H7 109.252 C3 C1 H12 111.077
C3 O5 C4 111.643 C4 C2 O6 110.579
C4 C2 H8 109.252 C4 C2 H11 111.077
O5 C3 H10 110.225 O5 C3 H14 107.112
O5 C4 H9 110.225 O5 C4 H13 107.112
O6 C1 H7 110.225 O6 C1 H12 107.112
O6 C2 H8 110.225 O6 C2 H11 107.112
H7 C1 H12 108.558 H8 C2 H11 108.558
H9 C4 H13 108.558 H10 C3 H14 108.558
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.013      
2 C 0.013      
3 C 0.013      
4 C 0.013      
5 O -0.312      
6 O -0.312      
7 H 0.055      
8 H 0.055      
9 H 0.055      
10 H 0.055      
11 H 0.088      
12 H 0.088      
13 H 0.088      
14 H 0.088      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.555 -3.016 0.000
y -3.016 -41.056 0.000
z 0.000 0.000 -31.182
Traceless
 xyz
x -2.436 -3.016 0.000
y -3.016 -6.187 0.000
z 0.000 0.000 8.623
Polar
3z2-r217.247
x2-y22.501
xy-3.016
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.192 -0.167 0.000
y -0.167 7.608 0.000
z 0.000 0.000 9.208


<r2> (average value of r2) Å2
<r2> 140.067
(<r2>)1/2 11.835