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 C5H12O (Butane, 1-methoxy-)

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 CS 1A'
Energy calculated at B1B95/CEP-31G
 hartrees
Energy at 0K-51.267339
Energy at 298.15K-51.280482
Nuclear repulsion energy141.714309
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 A' 3179 3043 46.91      
2 A' 3154 3020 68.99      
3 A' 3083 2952 44.28      
4 A' 3059 2929 22.84      
5 A' 3054 2924 66.28      
6 A' 3010 2882 114.35      
7 A' 2995 2867 55.22      
8 A' 1531 1466 6.13      
9 A' 1516 1452 10.56      
10 A' 1505 1441 10.13      
11 A' 1502 1438 3.36      
12 A' 1499 1436 1.34      
13 A' 1475 1412 1.17      
14 A' 1429 1369 17.44      
15 A' 1422 1361 12.88      
16 A' 1384 1325 0.72      
17 A' 1300 1245 2.46      
18 A' 1204 1153 28.65      
19 A' 1158 1109 66.80      
20 A' 1128 1080 42.79      
21 A' 1109 1062 1.36      
22 A' 1060 1015 1.37      
23 A' 946 906 13.05      
24 A' 910 872 14.03      
25 A' 464 444 1.92      
26 A' 369 354 3.73      
27 A' 295 283 1.51      
28 A' 128 122 2.15      
29 A" 3158 3024 165.35      
30 A" 3146 3012 8.07      
31 A" 3100 2968 9.69      
32 A" 3083 2952 89.95      
33 A" 3045 2915 79.04      
34 A" 1505 1441 11.55      
35 A" 1491 1428 11.07      
36 A" 1309 1254 0.00      
37 A" 1300 1244 0.07      
38 A" 1237 1185 1.19      
39 A" 1176 1126 5.38      
40 A" 1149 1100 0.09      
41 A" 952 912 0.24      
42 A" 813 778 0.27      
43 A" 744 713 8.96      
44 A" 235 225 0.53      
45 A" 214 205 4.02      
46 A" 130 125 2.74      
47 A" 91 87 3.97      
48 A" 70 67 1.85      

Unscaled Zero Point Vibrational Energy (zpe) 36407.6 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 34860.3 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
0.53375 0.03920 0.03783

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.464 2.825 0.000
C2 1.442 1.279 0.000
C3 -1.561 -2.682 0.000
O4 -1.415 -1.245 0.000
C5 -0.027 -0.817 0.000
C6 0.000 0.717 0.000
H7 -2.638 -2.893 0.000
H8 2.494 3.216 0.000
H9 0.949 3.224 0.890
H10 0.949 3.224 -0.890
H11 1.987 0.902 0.885
H12 1.987 0.902 -0.885
H13 -1.101 -3.135 0.900
H14 -1.101 -3.135 -0.900
H15 -0.548 1.080 -0.886
H16 -0.548 1.080 0.886
H17 0.492 -1.217 -0.896
H18 0.492 -1.217 0.896

Atom - Atom Distances (Å)
  C1 C2 C3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C11.54656.28284.98513.93532.56627.03721.10221.10321.10322.18052.18056.55076.55072.80672.80674.25254.2525
C21.54654.97053.81202.55961.54785.83562.20472.19572.19571.10531.10535.17305.17302.18772.18772.81672.8167
C36.28284.97051.44392.41463.74031.09757.15776.47856.47855.12015.12011.10801.10803.99503.99502.67662.6766
O44.98513.81201.44391.45172.41912.05255.93155.13355.13354.11864.11862.11662.11662.63472.63472.10662.1066
C53.93532.55962.41461.45171.53443.33574.75654.25154.25152.79202.79202.70872.70872.15712.15711.11031.1103
C62.56621.54783.74032.41911.53444.47153.53072.82442.82442.18282.18284.10654.10651.10301.10302.18752.1875
H77.03725.83561.09752.05253.33574.47157.97917.14697.14696.04796.04791.79781.79784.57574.57573.66203.6620
H81.10222.20477.15775.93154.75653.53077.97911.78341.78342.52922.52927.35367.35363.82153.82154.94614.9461
H91.10322.19576.47855.13354.25152.82447.14691.78341.78052.54333.10186.68146.91713.16122.61504.80854.4642
H101.10322.19576.47855.13354.25152.82447.14691.78341.78053.10182.54336.91716.68142.61503.16124.46424.8085
H112.18051.10535.12014.11862.79202.18286.04792.52922.54333.10181.77075.08265.38703.09732.54093.14622.5931
H122.18051.10535.12014.11862.79202.18286.04792.52923.10182.54331.77075.38705.08262.54093.09732.59313.1462
H136.55075.17301.10802.11662.70874.10651.79787.35366.68146.91715.08265.38701.79994.61104.25113.07312.4934
H146.55075.17301.10802.11662.70874.10651.79787.35366.91716.68145.38705.08261.79994.25114.61102.49343.0731
H152.80672.18773.99502.63472.15711.10304.57573.82153.16122.61503.09732.54094.61104.25111.77172.52103.0873
H162.80672.18773.99502.63472.15711.10304.57573.82152.61503.16122.54093.09734.25114.61101.77173.08732.5210
H174.25252.81672.67662.10661.11032.18753.66204.94614.80854.46423.14622.59313.07312.49342.52103.08731.7927
H184.25252.81672.67662.10661.11032.18753.66204.94614.46424.80852.59313.14622.49343.07313.08732.52101.7927

picture of Butane, 1-methoxy- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 112.055 C1 C2 H11 109.498
C1 C2 H12 109.498 C2 C1 H8 111.583
C2 C1 H9 110.812 C2 C1 H10 110.812
C2 C6 C5 112.289 C2 C6 H15 110.109
C2 C6 H16 110.109 C3 O4 C5 112.998
O4 C3 H7 106.939 O4 C3 H13 111.407
O4 C3 H14 111.407 O4 C5 C6 108.186
O4 C5 H17 109.907 O4 C5 H18 109.907
C5 C6 H15 108.652 C5 C6 H16 108.652
C6 C2 H11 109.591 C6 C2 H12 109.591
C6 C5 H17 110.590 C6 C5 H18 110.590
H7 C3 H13 109.202 H7 C3 H14 109.202
H8 C1 H9 107.934 H8 C1 H10 107.934
H9 C1 H10 107.610 H11 C2 H12 106.449
H13 C3 H14 108.636 H15 C6 H16 106.862
H17 C5 H18 107.663
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 C -0.388      
2 C -0.218      
3 C -0.337      
4 O -0.237      
5 C -0.284      
6 C -0.131      
7 H 0.211      
8 H 0.162      
9 H 0.125      
10 H 0.125      
11 H 0.108      
12 H 0.108      
13 H 0.140      
14 H 0.140      
15 H 0.124      
16 H 0.124      
17 H 0.114      
18 H 0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.436 -1.082 0.000 1.797
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.652 1.119 0.000
y 1.119 -34.139 0.000
z 0.000 0.000 -38.519
Traceless
 xyz
x -5.323 1.119 0.000
y 1.119 5.946 0.000
z 0.000 0.000 -0.623
Polar
3z2-r2-1.247
x2-y2-7.512
xy1.119
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.085 1.309 0.000
y 1.309 9.516 0.000
z 0.000 0.000 7.029


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