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: B3PW91/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 B3PW91/cc-pVDZ
 hartrees
Energy at 0K-308.754767
Energy at 298.15K-308.766357
Nuclear repulsion energy252.883555
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 B3PW91/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 3137 3027 0.00      
2 Ag 2979 2875 0.00      
3 Ag 2967 2863 0.00      
4 Ag 1503 1451 0.00      
5 Ag 1478 1427 0.00      
6 Ag 1461 1410 0.00      
7 Ag 1428 1378 0.00      
8 Ag 1236 1192 0.00      
9 Ag 1192 1150 0.00      
10 Ag 1090 1052 0.00      
11 Ag 1036 1000 0.00      
12 Ag 399 385 0.00      
13 Ag 328 316 0.00      
14 Au 3031 2925 9.68      
15 Au 3026 2920 244.56      
16 Au 1452 1401 13.13      
17 Au 1216 1173 12.45      
18 Au 1160 1120 2.83      
19 Au 835 806 0.17      
20 Au 237 228 7.73      
21 Au 96 93 7.34      
22 Au 69 67 2.10      
23 Bg 3029 2923 0.00      
24 Bg 3001 2896 0.00      
25 Bg 1452 1401 0.00      
26 Bg 1275 1231 0.00      
27 Bg 1179 1138 0.00      
28 Bg 1139 1099 0.00      
29 Bg 221 213 0.00      
30 Bg 122 118 0.00      
31 Bu 3137 3027 54.43      
32 Bu 2979 2875 150.08      
33 Bu 2967 2863 83.03      
34 Bu 1509 1456 2.24      
35 Bu 1476 1424 29.00      
36 Bu 1452 1401 2.82      
37 Bu 1338 1291 32.95      
38 Bu 1223 1180 297.96      
39 Bu 1178 1137 106.91      
40 Bu 991 956 63.29      
41 Bu 500 483 3.81      
42 Bu 140 136 3.37      

Unscaled Zero Point Vibrational Energy (zpe) 30830.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 29751.7 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 B3PW91/cc-pVDZ
ABC
0.63137 0.04318 0.04171

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.340 1.187 0.000
O2 -1.340 -1.187 0.000
C3 -1.457 -2.586 0.000
C4 1.457 2.586 0.000
C5 0.000 0.757 0.000
C6 0.000 -0.757 0.000
H7 2.529 2.827 0.000
H8 -2.529 -2.827 0.000
H9 -0.990 -3.041 0.897
H10 -0.990 -3.041 -0.897
H11 0.990 3.041 0.897
H12 0.990 3.041 -0.897
H13 -0.544 1.129 0.893
H14 -0.544 1.129 -0.893
H15 0.544 -1.129 0.893
H16 0.544 -1.129 -0.893

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O13.57914.69581.40391.40662.36092.02635.57474.90924.90922.08902.08902.08482.08482.60662.6066
O23.57911.40394.69582.36091.40665.57472.02632.08902.08904.90924.90922.60662.60662.08482.0848
C34.69581.40395.93583.64682.33776.72211.09921.10881.10886.20056.20053.92843.92842.63062.6306
C41.40394.69585.93582.33773.64681.09926.72216.20056.20051.10881.10882.63062.63063.92843.9284
C51.40662.36093.64682.33771.51493.26804.38694.02614.02612.64512.64511.10941.10942.15692.1569
C62.36091.40662.33773.64681.51494.38693.26802.64512.64514.02614.02612.15692.15691.10941.1094
H72.02635.57476.72211.09923.26804.38697.58656.90056.90051.79451.79453.62243.62244.51574.5157
H85.57472.02631.09926.72214.38693.26807.58651.79451.79456.90056.90054.51574.51573.62243.6224
H94.90922.08901.10886.20054.02612.64516.90051.79451.79336.39546.64214.19374.55962.45043.0343
H104.90922.08901.10886.20054.02612.64516.90051.79451.79336.64216.39544.55964.19373.03432.4504
H112.08904.90926.20051.10882.64514.02611.79456.90056.39546.64211.79332.45043.03434.19374.5596
H122.08904.90926.20051.10882.64514.02611.79456.90056.64216.39541.79333.03432.45044.55964.1937
H132.08482.60663.92842.63061.10942.15693.62244.51574.19374.55962.45043.03431.78572.50653.0775
H142.08482.60663.92842.63061.10942.15693.62244.51574.55964.19373.03432.45041.78573.07752.5065
H152.60662.08482.63063.92842.15691.10944.51573.62242.45043.03434.19374.55962.50653.07751.7857
H162.60662.08482.63063.92842.15691.10944.51573.62243.03432.45044.55964.19373.07752.50651.7857

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 107.479 O1 C4 H11 111.945
O1 C4 H12 111.945 O1 C5 C6 107.767
O1 C5 H13 111.363 O1 C5 H14 111.363
O2 C3 H8 107.479 O2 C3 H9 111.945
O2 C3 H10 111.945 O2 C6 C5 107.767
O2 C6 H15 111.363 O2 C6 H16 111.363
C3 O2 C6 112.566 C4 O1 C5 112.566
C5 C6 H15 109.580 C5 C6 H16 109.580
C6 C5 H13 109.580 C6 C5 H14 109.580
H7 C4 H11 108.726 H7 C4 H12 108.726
H8 C3 H9 108.726 H8 C3 H10 108.726
H9 C3 H10 107.936 H11 C4 H12 107.936
H13 C5 H14 107.180 H15 C6 H16 107.180
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.333      
2 O -0.333      
3 C 0.074      
4 C 0.074      
5 C 0.098      
6 C 0.098      
7 H 0.049      
8 H 0.049      
9 H 0.026      
10 H 0.026      
11 H 0.026      
12 H 0.026      
13 H 0.030      
14 H 0.030      
15 H 0.030      
16 H 0.030      


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 -40.085 2.118 0.000
y 2.118 -30.622 0.000
z 0.000 0.000 -38.037
Traceless
 xyz
x -5.755 2.118 0.000
y 2.118 8.439 0.000
z 0.000 0.000 -2.684
Polar
3z2-r2-5.368
x2-y2-9.463
xy2.118
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 268.831
(<r2>)1/2 16.396