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: BLYP/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-307.581961
Energy at 298.15K-307.592946
Nuclear repulsion energy260.534195
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/aug-cc-pVDZ
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 3017 3011 0.00      
2 Ag 2903 2898 0.00      
3 Ag 1430 1428 0.00      
4 Ag 1349 1346 0.00      
5 Ag 1266 1264 0.00      
6 Ag 1096 1094 0.00      
7 Ag 970 968 0.00      
8 Ag 797 796 0.00      
9 Ag 424 423 0.00      
10 Ag 395 394 0.00      
11 Au 3016 3010 91.47      
12 Au 2895 2890 63.89      
13 Au 1419 1417 1.70      
14 Au 1323 1320 12.00      
15 Au 1221 1219 27.50      
16 Au 1068 1066 59.65      
17 Au 1049 1047 112.04      
18 Au 854 852 24.11      
19 Au 241 241 0.69      
20 Bg 3017 3011 0.00      
21 Bg 2906 2901 0.00      
22 Bg 1417 1414 0.00      
23 Bg 1293 1291 0.00      
24 Bg 1180 1178 0.00      
25 Bg 1053 1051 0.00      
26 Bg 822 820 0.00      
27 Bg 474 473 0.00      
28 Bu 3017 3011 49.26      
29 Bu 2911 2905 179.64      
30 Bu 1423 1420 11.75      
31 Bu 1336 1333 2.60      
32 Bu 1256 1254 8.37      
33 Bu 1017 1015 7.81      
34 Bu 828 826 65.79      
35 Bu 594 593 12.92      
36 Bu 254 254 17.09      

Unscaled Zero Point Vibrational Energy (zpe) 25765.0 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 25716.0 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/aug-cc-pVDZ
ABC
0.16414 0.15266 0.08880

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/aug-cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.767 1.190
C2 0.000 0.767 -1.190
C3 0.000 -0.767 1.190
C4 0.000 -0.767 -1.190
O5 -0.645 -1.279 0.000
O6 0.645 1.279 0.000
H7 -1.044 1.147 1.243
H8 -1.044 1.147 -1.243
H9 1.044 -1.147 -1.243
H10 1.044 -1.147 1.243
H11 0.576 1.164 -2.045
H12 0.576 1.164 2.045
H13 -0.576 -1.164 -2.045
H14 -0.576 -1.164 2.045

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13 H14
C12.37981.53442.83152.45371.44721.11262.67473.26712.18123.30991.10493.81162.1894
C22.37982.83151.53442.45371.44722.67471.11262.18123.26711.10493.30992.18943.8116
C31.53442.83152.37981.44722.45372.18123.26712.67471.11263.81162.18943.30991.1049
C42.83151.53442.37981.44722.45373.26712.18121.11262.67472.18943.81161.10493.3099
O52.45372.45371.44721.44722.86572.75542.75542.10162.10163.41253.41252.04972.0497
O61.44721.44722.45372.45372.86572.10162.10162.75542.75542.04972.04973.41253.4125
H71.11262.67472.18123.26712.75542.10162.48593.97563.10253.66581.80804.04652.4910
H82.67471.11263.26712.18122.75542.10162.48593.10253.97561.80803.66582.49104.0465
H93.26712.18122.67471.11262.10162.75543.97563.10252.48592.49104.04651.80803.6658
H102.18123.26711.11262.67472.10162.75543.10253.97562.48594.04652.49103.66581.8080
H113.30991.10493.81162.18943.41252.04973.66581.80802.49104.04654.09062.59764.8457
H121.10493.30992.18943.81163.41252.04971.80803.66584.04652.49104.09064.84572.5976
H133.81162.18943.30991.10492.04973.41254.04652.49101.80803.66582.59764.84574.0906
H142.18943.81161.10493.30992.04973.41252.49104.04653.66581.80804.84572.59764.0906

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 110.730 C1 C3 H10 109.962
C1 C3 H14 111.060 C1 O6 C2 110.615
C2 C4 O5 110.730 C2 C4 H9 109.962
C2 C4 H13 111.060 C3 C1 O6 110.730
C3 C1 H7 109.962 C3 C1 H12 111.060
C3 O5 C4 110.615 C4 C2 O6 110.730
C4 C2 H8 109.962 C4 C2 H11 111.060
O5 C3 H10 109.681 O5 C3 H14 106.088
O5 C4 H9 109.681 O5 C4 H13 106.088
O6 C1 H7 109.681 O6 C1 H12 106.088
O6 C2 H8 109.681 O6 C2 H11 106.088
H7 C1 H12 109.239 H8 C2 H11 109.239
H9 C4 H13 109.239 H10 C3 H14 109.239
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.251      
2 C 1.251      
3 C 1.251      
4 C 1.251      
5 O -0.499      
6 O -0.499      
7 H -0.444      
8 H -0.444      
9 H -0.444      
10 H -0.444      
11 H -0.557      
12 H -0.557      
13 H -0.557      
14 H -0.557      


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 -39.622 -3.230 0.000
y -3.230 -41.969 0.000
z 0.000 0.000 -31.856
Traceless
 xyz
x -2.710 -3.230 0.000
y -3.230 -6.230 0.000
z 0.000 0.000 8.940
Polar
3z2-r217.880
x2-y22.347
xy-3.230
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.406 -0.064 0.000
y -0.064 8.872 0.000
z 0.000 0.000 10.426


<r2> (average value of r2) Å2
<r2> 143.860
(<r2>)1/2 11.994