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

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-43.310820
Energy at 298.15K-43.319124
Nuclear repulsion energy97.930383
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' 3162 3026 36.63      
2 A' 3155 3020 78.53      
3 A' 3126 2992 3.05      
4 A' 3069 2938 21.10      
5 A' 2909 2785 124.68      
6 A' 1841 1762 228.15      
7 A' 1504 1440 19.92      
8 A' 1495 1431 11.37      
9 A' 1413 1353 3.26      
10 A' 1404 1344 4.41      
11 A' 1298 1243 0.61      
12 A' 1173 1123 3.96      
13 A' 1162 1113 4.22      
14 A' 936 896 20.39      
15 A' 846 810 24.33      
16 A' 533 510 6.58      
17 A' 332 318 6.77      
18 A' 315 302 0.30      
19 A' 224 214 1.01      
20 A" 3159 3024 19.90      
21 A" 3150 3015 3.31      
22 A" 3068 2937 29.12      
23 A" 1483 1420 1.43      
24 A" 1481 1417 2.40      
25 A" 1396 1336 4.98      
26 A" 1327 1271 0.12      
27 A" 1141 1092 1.24      
28 A" 993 951 1.13      
29 A" 942 902 0.20      
30 A" 917 878 3.50      
31 A" 310 297 1.20      
32 A" 207 198 0.03      
33 A" 66 64 6.29      

Unscaled Zero Point Vibrational Energy (zpe) 24769.9 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 23709.8 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/CEP-31G*
ABC
0.25461 0.12225 0.09265

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)
H1 0.299 0.571 2.186
H2 0.299 0.571 -2.186
H3 -1.045 1.352 -1.309
H4 -1.045 1.352 1.309
H5 0.578 2.080 1.279
H6 0.578 2.080 -1.279
C7 0.034 1.123 -1.271
C8 0.034 1.123 1.271
H9 1.449 0.042 0.000
C10 0.385 0.319 0.000
C11 -0.427 -0.970 0.000
H12 -1.539 -0.812 0.000
O13 0.034 -2.100 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.37263.82471.78451.78323.79033.51071.10132.52642.20252.77123.17323.4621
H24.37261.78453.82473.79031.78321.10133.51072.52642.20252.77123.17323.4621
H33.82471.78452.61723.14021.77911.10322.80513.10582.19592.73532.57623.8460
H41.78453.82472.61721.77913.14022.80511.10323.10582.19592.73532.57623.8460
H51.78323.79033.14021.77912.55832.77761.10162.55922.18553.45673.80574.4059
H63.79031.78321.77913.14022.55831.10162.77762.55922.18553.45673.80574.4059
C73.51071.10131.10322.80512.77761.10162.54132.18741.54392.49082.79833.4644
C81.10133.51072.80511.10321.10162.77762.54132.18741.54392.49082.79833.4644
H92.52642.52643.10583.10582.55922.55922.18742.18741.09972.13133.10772.5677
C102.20252.20252.19592.19592.18552.18551.54391.54391.09971.52292.23152.4447
C112.77122.77122.73532.73533.45673.45672.49082.49082.13131.52291.12341.2210
H123.17323.17322.57622.57623.80573.80572.79832.79833.10772.23151.12342.0334
O133.46213.46213.84603.84604.40594.40593.46443.46442.56772.44471.22102.0334

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 108.086 H1 C8 H5 108.082
H1 C8 C10 111.644 H2 C7 H3 108.086
H2 C7 H6 108.082 H2 C7 C10 111.644
H3 C7 H6 107.590 H3 C7 C10 111.011
H4 C8 H5 107.590 H4 C8 C10 111.011
H5 C8 C10 110.283 H6 C7 C10 110.283
C7 C10 C8 110.780 C7 C10 H9 110.550
C7 C10 C11 108.620 C8 C10 H9 110.550
C8 C10 C11 108.620 H9 C10 C11 107.624
C10 C11 H12 114.128 C10 C11 O13 125.627
H12 C11 O13 120.245
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 H 0.178      
2 H 0.178      
3 H 0.141      
4 H 0.141      
5 H 0.175      
6 H 0.175      
7 C -0.554      
8 C -0.554      
9 H 0.171      
10 C 0.236      
11 C -0.345      
12 H 0.129      
13 O -0.070      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.523 3.031 0.000 3.075
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.692 0.983 0.000
y 0.983 -38.155 0.000
z 0.000 0.000 -30.308
Traceless
 xyz
x 4.539 0.983 0.000
y 0.983 -8.155 0.000
z 0.000 0.000 3.615
Polar
3z2-r27.231
x2-y28.463
xy0.983
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.889 -0.132 0.000
y -0.132 7.580 0.000
z 0.000 0.000 6.167


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