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 C4H10O2 (Ethane, 1,2-dimethoxy-)

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-60.463014
Energy at 298.15K-60.474392
Nuclear repulsion energy142.538544
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/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 Ag 3114 3034 0.00      
2 Ag 2966 2891 0.00      
3 Ag 2944 2869 0.00      
4 Ag 1530 1491 0.00      
5 Ag 1511 1473 0.00      
6 Ag 1479 1441 0.00      
7 Ag 1437 1400 0.00      
8 Ag 1207 1176 0.00      
9 Ag 1121 1093 0.00      
10 Ag 1063 1036 0.00      
11 Ag 952 928 0.00      
12 Ag 374 364 0.00      
13 Ag 309 301 0.00      
14 Au 3040 2962 151.72      
15 Au 3018 2941 161.04      
16 Au 1496 1458 16.35      
17 Au 1209 1178 13.04      
18 Au 1146 1117 1.90      
19 Au 842 821 0.16      
20 Au 214 209 12.44      
21 Au 85 82 15.46      
22 Au 65 63 3.82      
23 Bg 3018 2941 0.00      
24 Bg 3009 2932 0.00      
25 Bg 1496 1458 0.00      
26 Bg 1289 1256 0.00      
27 Bg 1161 1131 0.00      
28 Bg 1129 1100 0.00      
29 Bg 201 196 0.00      
30 Bg 111 108 0.00      
31 Bu 3114 3034 78.39      
32 Bu 2969 2893 132.58      
33 Bu 2943 2868 144.10      
34 Bu 1542 1503 4.74      
35 Bu 1511 1473 25.02      
36 Bu 1473 1436 2.21      
37 Bu 1366 1331 17.89      
38 Bu 1186 1155 46.54      
39 Bu 1106 1078 288.10      
40 Bu 889 867 48.85      
41 Bu 476 464 5.38      
42 Bu 136 133 6.75      

Unscaled Zero Point Vibrational Energy (zpe) 30621.4 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 29840.5 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/CEP-121G
ABC
0.61329 0.04073 0.03935

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.402 1.187 0.000
O2 -1.402 -1.187 0.000
C3 -1.574 -2.636 0.000
C4 1.574 2.636 0.000
C5 0.000 0.767 0.000
C6 0.000 -0.767 0.000
H7 2.651 2.820 0.000
H8 -2.651 -2.820 0.000
H9 -1.123 -3.091 0.898
H10 -1.123 -3.091 -0.898
H11 1.123 3.091 0.898
H12 1.123 3.091 -0.898
H13 -0.518 1.146 0.896
H14 -0.518 1.146 -0.896
H15 0.518 -1.146 0.896
H16 0.518 -1.146 -0.896

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O13.67444.84461.45861.46372.40512.05605.70005.04825.04822.12282.12282.11942.11942.65082.6508
O23.67441.45864.84462.40511.46375.70002.05602.12282.12285.04825.04822.65082.65082.11942.1194
C34.84461.45866.13963.74892.44316.90061.09341.10271.10276.39306.39304.02704.02702.72002.7200
C41.45864.84466.13962.44313.74891.09346.90066.39306.39301.10271.10272.72002.72004.02704.0270
C51.46372.40513.74892.44311.53373.35354.46064.11684.11682.73272.73271.10211.10212.17482.1748
C62.40511.46372.44313.74891.53374.46063.35352.73272.73274.11684.11682.17482.17481.10211.1021
H72.05605.70006.90061.09343.35354.46067.74177.07057.07051.79281.79283.69503.69504.59154.5915
H85.70002.05601.09346.90064.46063.35357.74171.79281.79287.07057.07054.59154.59153.69503.6950
H95.04822.12281.10276.39304.11682.73277.07051.79281.79636.57666.81754.27934.64012.54503.1136
H105.04822.12281.10276.39304.11682.73277.07051.79281.79636.81756.57664.64014.27933.11362.5450
H112.12285.04826.39301.10272.73274.11681.79287.07056.57666.81751.79632.54503.11364.27934.6401
H122.12285.04826.39301.10272.73274.11681.79287.07056.81756.57661.79633.11362.54504.64014.2793
H132.11942.65084.02702.72001.10212.17483.69504.59154.27934.64012.54503.11361.79132.51543.0881
H142.11942.65084.02702.72001.10212.17483.69504.59154.64014.27933.11362.54501.79133.08812.5154
H152.65082.11942.72004.02702.17481.10214.59153.69502.54503.11364.27934.64012.51543.08811.7913
H162.65082.11942.72004.02702.17481.10214.59153.69503.11362.54504.64014.27933.08812.51541.7913

picture of Ethane, 1,2-dimethoxy- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C4 H7 106.468 O1 C4 H11 111.188
O1 C4 H12 111.188 O1 C5 C6 106.696
O1 C5 H13 110.598 O1 C5 H14 110.598
O2 C3 H8 106.468 O2 C3 H9 111.188
O2 C3 H10 111.188 O2 C6 C5 106.696
O2 C6 H15 110.598 O2 C6 H16 110.598
C3 O2 C6 113.451 C4 O1 C5 113.451
C5 C6 H15 110.113 C5 C6 H16 110.113
C6 C5 H13 110.113 C6 C5 H14 110.113
H7 C4 H11 109.441 H7 C4 H12 109.441
H8 C3 H9 109.441 H8 C3 H10 109.441
H9 C3 H10 109.067 H11 C4 H12 109.067
H13 C5 H14 108.715 H15 C6 H16 108.715
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.281      
2 O -0.281      
3 C -0.297      
4 C -0.297      
5 C -0.126      
6 C -0.126      
7 H 0.170      
8 H 0.170      
9 H 0.136      
10 H 0.136      
11 H 0.136      
12 H 0.136      
13 H 0.130      
14 H 0.130      
15 H 0.130      
16 H 0.130      


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 -42.503 3.025 0.000
y 3.025 -28.063 0.000
z 0.000 0.000 -38.627
Traceless
 xyz
x -9.158 3.025 0.000
y 3.025 12.502 0.000
z 0.000 0.000 -3.344
Polar
3z2-r2-6.689
x2-y2-14.440
xy3.025
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.484 1.475 0.000
y 1.475 9.762 0.000
z 0.000 0.000 7.253


<r2> (average value of r2) Å2
<r2> 229.312
(<r2>)1/2 15.143