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All results from a given calculation for CHOCH(CH3)CH3 (Propanal, 2-methyl-)

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-232.348335
Energy at 298.15K-232.356713
Nuclear repulsion energy175.824806
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 B1B95/6-31G**
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' 3155 3012 21.03      
2 A' 3143 3001 47.07      
3 A' 3101 2961 5.08      
4 A' 3060 2922 17.60      
5 A' 2867 2738 114.64      
6 A' 1862 1778 182.65      
7 A' 1517 1449 15.56      
8 A' 1509 1441 8.49      
9 A' 1427 1362 1.85      
10 A' 1415 1351 3.75      
11 A' 1311 1252 0.78      
12 A' 1183 1129 0.56      
13 A' 1180 1127 9.33      
14 A' 934 892 18.53      
15 A' 851 813 22.92      
16 A' 543 518 6.43      
17 A' 339 324 6.62      
18 A' 324 310 0.21      
19 A' 227 217 1.06      
20 A" 3155 3012 14.96      
21 A" 3139 2997 2.90      
22 A" 3059 2921 21.46      
23 A" 1496 1429 1.44      
24 A" 1493 1425 1.25      
25 A" 1402 1338 3.42      
26 A" 1345 1284 0.97      
27 A" 1145 1093 0.32      
28 A" 997 952 0.23      
29 A" 955 911 0.65      
30 A" 930 888 1.66      
31 A" 317 302 0.53      
32 A" 211 201 0.08      
33 A" 63 60 4.87      

Unscaled Zero Point Vibrational Energy (zpe) 24825.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 23703.8 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 B1B95/6-31G**
ABC
0.25837 0.12456 0.09422

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.310 0.566 2.167
H2 0.310 0.566 -2.167
H3 -1.032 1.341 -1.313
H4 -1.032 1.341 1.313
H5 0.578 2.063 1.264
H6 0.578 2.063 -1.264
C7 0.038 1.113 -1.262
C8 0.038 1.113 1.262
H9 1.425 0.032 0.000
C10 0.369 0.316 0.000
C11 -0.428 -0.965 0.000
H12 -1.534 -0.810 0.000
O13 0.038 -2.078 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.33483.80961.76971.76873.75343.48401.09212.49482.18262.75473.16103.4300
H24.33481.76973.80963.75341.76871.09213.48402.49482.18262.75473.16103.4300
H33.80961.76972.62563.12301.76491.09452.79783.07722.17592.72102.56903.8151
H41.76973.80962.62561.76493.12302.79781.09453.07722.17592.72102.56903.8151
H51.76873.75343.12301.76492.52832.75271.09252.53772.16673.43223.78294.3635
H63.75341.76871.76493.12302.52831.09252.75272.53772.16673.43223.78294.3635
C73.48401.09211.09452.79782.75271.09252.52502.16481.52952.47612.78613.4322
C81.09213.48402.79781.09451.09252.75272.52502.16481.52952.47612.78613.4322
H92.49482.49483.07723.07722.53772.53772.16482.16481.09352.10433.07592.5253
C102.18262.18262.17592.17592.16672.16671.52951.52951.09351.50862.21052.4168
C112.75472.75472.72102.72103.43223.43222.47612.47612.10431.50861.11631.2067
H123.16103.16102.56902.56903.78293.78292.78612.78613.07592.21051.11632.0195
O133.43003.43003.81513.81514.36354.36353.43223.43222.52532.41681.20672.0195

picture of Propanal, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C8 H4 108.056 H1 C8 H5 108.112
H1 C8 C10 111.633 H2 C7 H3 108.056
H2 C7 H6 108.112 H2 C7 C10 111.633
H3 C7 H6 107.604 H3 C7 C10 110.950
H4 C8 H5 107.604 H4 C8 C10 110.950
H5 C8 C10 110.342 H6 C7 C10 110.342
C7 C10 C8 111.265 C7 C10 H9 110.131
C7 C10 C11 109.176 C8 C10 H9 110.131
C8 C10 C11 109.176 H9 C10 C11 106.848
C10 C11 H12 113.889 C10 C11 O13 125.399
H12 C11 O13 120.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.138      
2 H 0.138      
3 H 0.124      
4 H 0.124      
5 H 0.133      
6 H 0.133      
7 C -0.366      
8 C -0.366      
9 H 0.143      
10 C -0.185      
11 C 0.309      
12 H 0.068      
13 O -0.394      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.434 2.736 0.000 2.770
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.441 0.937 0.000
y 0.937 -37.460 0.000
z 0.000 0.000 -30.291
Traceless
 xyz
x 3.435 0.937 0.000
y 0.937 -7.094 0.000
z 0.000 0.000 3.659
Polar
3z2-r27.318
x2-y27.019
xy0.937
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.321 -0.113 0.000
y -0.113 7.588 0.000
z 0.000 0.000 6.168


<r2> (average value of r2) Å2
<r2> 133.942
(<r2>)1/2 11.573