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: B1B95/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B1B95/CEP-31G
 hartrees
Energy at 0K-60.350616
Energy at 298.15K-60.362016
Nuclear repulsion energy143.281375
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 B1B95/CEP-31G
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 3184 3048 0.00      
2 Ag 3037 2908 0.00      
3 Ag 3016 2888 0.00      
4 Ag 1527 1462 0.00      
5 Ag 1506 1442 0.00      
6 Ag 1479 1417 0.00      
7 Ag 1444 1383 0.00      
8 Ag 1215 1163 0.00      
9 Ag 1162 1113 0.00      
10 Ag 1096 1049 0.00      
11 Ag 979 938 0.00      
12 Ag 380 364 0.00      
13 Ag 306 293 0.00      
14 Au 3112 2980 131.47      
15 Au 3092 2961 207.60      
16 Au 1492 1429 22.10      
17 Au 1212 1160 11.96      
18 Au 1153 1104 0.41      
19 Au 839 803 0.26      
20 Au 220 211 12.78      
21 Au 96 92 20.71      
22 Au 68 65 4.55      
23 Bg 3093 2961 0.00      
24 Bg 3081 2950 0.00      
25 Bg 1492 1428 0.00      
26 Bg 1284 1230 0.00      
27 Bg 1165 1115 0.00      
28 Bg 1130 1082 0.00      
29 Bg 208 199 0.00      
30 Bg 117 112 0.00      
31 Bu 3184 3048 90.92      
32 Bu 3039 2910 142.98      
33 Bu 3015 2886 164.46      
34 Bu 1534 1469 7.67      
35 Bu 1505 1441 26.20      
36 Bu 1474 1411 0.24      
37 Bu 1364 1306 9.34      
38 Bu 1200 1149 117.76      
39 Bu 1151 1102 155.45      
40 Bu 925 885 46.80      
41 Bu 471 451 5.96      
42 Bu 134 129 8.60      

Unscaled Zero Point Vibrational Energy (zpe) 31088.7 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 29767.5 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 B1B95/CEP-31G
ABC
0.61367 0.04139 0.03997

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.444 1.770 0.000
O2 -0.444 -1.770 0.000
C3 0.262 -3.030 0.000
C4 -0.262 3.030 0.000
C5 -0.444 0.624 0.000
C6 0.444 -0.624 0.000
H7 0.499 3.821 0.000
H8 -0.499 -3.821 0.000
H9 0.898 -3.135 0.900
H10 0.898 -3.135 -0.900
H11 -0.898 3.135 0.900
H12 -0.898 3.135 -0.900
H13 -1.092 0.627 0.897
H14 -1.092 0.627 -0.897
H15 1.092 -0.627 0.897
H16 1.092 -0.627 -0.897

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O13.64914.80301.44481.45012.39342.05205.66945.00735.00732.11602.11602.11502.11502.63932.6393
O23.64911.44484.80302.39341.45015.66942.05202.11602.11605.00735.00732.63932.63932.11502.1150
C34.80301.44486.08253.72142.41306.85491.09721.10731.10736.33756.33754.00114.00112.69652.6965
C41.44484.80306.08252.41303.72141.09726.85496.33756.33751.10731.10732.69652.69654.00114.0011
C51.45012.39343.72142.41301.53193.33324.44504.09184.09182.70612.70611.10661.10662.17492.1749
C62.39341.45012.41303.72141.53194.44503.33322.70612.70614.09184.09182.17492.17491.10661.1066
H72.05205.66946.85491.09723.33324.44507.70657.02547.02541.79751.79753.67963.67964.57564.5756
H85.66942.05201.09726.85494.44503.33327.70651.79751.79757.02547.02544.57564.57563.67963.6796
H95.00732.11601.10736.33754.09182.70617.02541.79751.80026.52256.76644.25594.61982.51623.0921
H105.00732.11601.10736.33754.09182.70617.02541.79751.80026.76646.52254.61984.25593.09212.5162
H112.11605.00736.33751.10732.70614.09181.79757.02546.52256.76641.80022.51623.09214.25594.6198
H122.11605.00736.33751.10732.70614.09181.79757.02546.76646.52251.80023.09212.51624.61984.2559
H132.11502.63934.00112.69651.10662.17493.67964.57564.25594.61982.51623.09211.79412.51863.0923
H142.11502.63934.00112.69651.10662.17493.67964.57564.61984.25593.09212.51621.79413.09232.5186
H152.63932.11502.69654.00112.17491.10664.57563.67962.51623.09214.25594.61982.51863.09231.7941
H162.63932.11502.69654.00112.17491.10664.57563.67963.09212.51624.61984.25593.09232.51861.7941

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 106.855 O1 C4 H11 111.333
O1 C4 H12 111.333 O1 C5 C6 106.728
O1 C5 H13 110.914 O1 C5 H14 110.914
O2 C3 H8 106.855 O2 C3 H9 111.333
O2 C3 H10 111.333 O2 C6 C5 106.728
O2 C6 H15 110.914 O2 C6 H16 110.914
C3 O2 C6 112.931 C4 O1 C5 112.931
C5 C6 H15 109.983 C5 C6 H16 109.983
C6 C5 H13 109.983 C6 C5 H14 109.983
H7 C4 H11 109.253 H7 C4 H12 109.253
H8 C3 H9 109.253 H8 C3 H10 109.253
H9 C3 H10 108.767 H11 C4 H12 108.767
H13 C5 H14 108.320 H15 C6 H16 108.320
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.265      
2 O -0.265      
3 C -0.347      
4 C -0.347      
5 C -0.163      
6 C -0.163      
7 H 0.211      
8 H 0.211      
9 H 0.145      
10 H 0.145      
11 H 0.145      
12 H 0.145      
13 H 0.137      
14 H 0.137      
15 H 0.137      
16 H 0.137      


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 -39.318 -6.545 0.000
y -6.545 -29.210 0.000
z 0.000 0.000 -37.309
Traceless
 xyz
x -6.058 -6.545 0.000
y -6.545 9.104 0.000
z 0.000 0.000 -3.045
Polar
3z2-r2-6.091
x2-y2-10.108
xy-6.545
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.161 -0.101 0.000
y -0.101 9.084 0.000
z 0.000 0.000 5.953


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000