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 (Propane, 2-methoxy-2-methyl-)

using model chemistry: HF/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-271.194536
Energy at 298.15K-271.208267
Nuclear repulsion energy272.251795
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 HF/6-31G**
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 3273 2954 60.07      
2 A 3268 2950 73.44      
3 A 3262 2944 74.55      
4 A 3256 2938 23.01      
5 A 3198 2886 4.81      
6 A 3188 2877 38.81      
7 A 3172 2863 40.39      
8 A 1655 1494 8.31      
9 A 1647 1487 5.01      
10 A 1633 1474 2.13      
11 A 1619 1461 1.43      
12 A 1613 1456 0.82      
13 A 1563 1411 10.98      
14 A 1543 1392 13.02      
15 A 1405 1268 18.00      
16 A 1376 1242 159.27      
17 A 1316 1188 1.54      
18 A 1252 1130 111.79      
19 A 1137 1026 3.52      
20 A 1000 903 0.14      
21 A 959 866 21.79      
22 A 778 702 4.66      
23 A 545 492 1.95      
24 A 443 400 0.62      
25 A 390 352 0.89      
26 A 309 279 0.65      
27 A 277 250 0.43      
28 A 3271 2952 50.87      
29 A 3261 2943 2.97      
30 A 3253 2936 6.78      
31 A 3227 2913 81.32      
32 A 3185 2875 16.24      
33 A 1643 1483 1.25      
34 A 1627 1469 1.95      
35 A 1615 1458 0.05      
36 A 1603 1447 0.02      
37 A 1538 1389 14.40      
38 A 1370 1237 22.39      
39 A 1286 1161 3.91      
40 A 1133 1023 3.36      
41 A 1040 938 0.02      
42 A 990 893 0.32      
43 A 494 446 7.44      
44 A 367 331 1.58      
45 A 310 280 1.38      
46 A 254 229 1.66      
47 A 187 169 2.45      
48 A 37 33 3.16      

Unscaled Zero Point Vibrational Energy (zpe) 38382.3 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 34643.9 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 HF/6-31G**
ABC
0.14705 0.09150 0.09147

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.755 -0.806 0.000
C2 0.000 0.393 0.000
C3 -1.064 1.489 0.000
C4 -0.098 -2.035 0.000
H5 -0.867 -2.797 0.000
H6 -0.610 2.475 0.000
C7 0.863 0.502 1.261
C8 0.863 0.502 -1.261
H9 0.520 -2.178 0.882
H10 0.520 -2.178 -0.882
H11 0.254 0.351 -2.146
H12 0.254 0.351 2.146
H13 1.317 1.486 1.322
H14 1.317 1.486 -1.322
H15 1.667 -0.226 1.271
H16 1.667 -0.226 -1.271
H17 -1.694 1.397 -0.878
H18 -1.694 1.397 0.878

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
O11.41682.31531.39421.99433.28352.43262.43262.07032.07032.63882.63883.36033.36032.79542.79542.55022.5502
C21.41681.52712.43093.30602.16871.53201.53202.76772.76772.16192.16192.16242.16242.18572.18572.15552.1555
C32.31531.52713.65444.29021.08532.50552.50554.09054.09052.76392.76392.72322.72323.46613.46611.08441.0844
C41.39422.43093.65441.08244.53912.99212.99211.08671.08673.22913.22914.01884.01882.82882.82883.88563.8856
H51.99433.30604.29021.08245.27783.93283.93281.75691.75693.97173.97174.98624.98623.82683.82684.36354.3635
H63.28352.16871.08534.53915.27782.76602.76604.86834.86833.14063.14062.53702.53703.75413.75411.76291.7629
C72.43261.53202.50552.99213.93282.76602.52212.72813.44873.46481.08511.08532.80131.08492.75433.45152.7359
C82.43261.53202.50552.99213.93282.76602.52213.44872.72811.08513.46482.80131.08532.75431.08492.73593.4515
H92.07032.76774.09051.08671.75694.86832.72813.44871.76483.95472.83963.77524.34962.29653.12394.55824.2046
H102.07032.76774.09051.08671.75694.86833.44872.72811.76482.83963.95474.34963.77523.12392.29654.20464.5582
H112.63882.16192.76393.22913.97173.14063.46481.08513.95472.83964.29293.80111.75983.74241.75972.54913.7463
H122.63882.16192.76393.22913.97173.14061.08513.46482.83963.95474.29291.75983.80111.75973.74243.74632.5491
H133.36032.16242.72324.01884.98622.53701.08532.80133.77524.34963.80111.75982.64421.74873.12693.72983.0445
H143.36032.16242.72324.01884.98622.53702.80131.08534.34963.77521.75983.80112.64423.12691.74873.04453.7298
H152.79542.18573.46612.82883.82683.75411.08492.75432.29653.12393.74241.75971.74873.12692.54124.30643.7528
H162.79542.18573.46612.82883.82683.75412.75431.08493.12392.29651.75973.74243.12691.74872.54123.75284.3064
H172.55022.15551.08443.88564.36351.76293.45152.73594.55824.20462.54913.74633.72983.04454.30643.75281.7557
H182.55022.15551.08443.88564.36351.76292.73593.45154.20464.55823.74632.54913.04453.72983.75284.30641.7557

picture of Propane, 2-methoxy-2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 103.653 O1 C2 C7 111.107
O1 C2 C8 111.107 O1 C4 H5 106.595
O1 C4 H9 112.545 O1 C4 H10 112.545
C2 O1 C4 119.709 C2 C3 H6 111.101
C2 C3 H17 110.106 C2 C3 H18 110.106
C2 C7 H12 110.223 C2 C7 H13 110.250
C2 C7 H15 112.154 C2 C8 H11 110.223
C2 C8 H14 110.250 C2 C8 H16 112.154
C3 C2 C7 109.976 C3 C2 C8 109.976
H5 C4 H9 108.188 H5 C4 H10 108.188
H6 C3 H17 108.678 H6 C3 H18 108.678
C7 C2 C8 110.803 H9 C4 H10 108.595
H11 C8 H14 108.349 H11 C8 H16 108.372
H12 C7 H13 108.349 H12 C7 H15 108.372
H13 C7 H15 107.369 H14 C8 H16 107.369
H17 C3 H18 108.098
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.649 -0.562    
2 C 0.278 0.776    
3 C -0.307 -0.386    
4 C -0.001 0.138    
5 H 0.124 0.054    
6 H 0.101 0.078    
7 C -0.333 -0.352    
8 C -0.333 -0.352    
9 H 0.092 0.005    
10 H 0.092 0.005    
11 H 0.125 0.084    
12 H 0.125 0.084    
13 H 0.112 0.056    
14 H 0.112 0.056    
15 H 0.109 0.073    
16 H 0.109 0.073    
17 H 0.123 0.083    
18 H 0.123 0.083    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.318 -0.018 0.000 1.318
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.491 -0.926 0.000
y -0.926 -37.107 0.000
z 0.000 0.000 -39.983
Traceless
 xyz
x -2.946 -0.926 0.000
y -0.926 3.629 0.000
z 0.000 0.000 -0.684
Polar
3z2-r2-1.367
x2-y2-4.383
xy-0.926
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.785 -0.002 0.000
y -0.002 8.832 0.000
z 0.000 0.000 7.897


<r2> (average value of r2) Å2
<r2> 179.116
(<r2>)1/2 13.383