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

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-231.854104
Energy at 298.15K-231.862620
HF Energy-231.063655
Nuclear repulsion energy175.857169
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 MP2/TZVP
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' 3175 3010 24.30      
2 A' 3167 3002 44.56      
3 A' 3126 2963 3.75      
4 A' 3077 2916 16.00      
5 A' 2930 2777 98.84      
6 A' 1763 1671 137.09      
7 A' 1532 1452 16.74      
8 A' 1528 1449 6.29      
9 A' 1451 1375 1.26      
10 A' 1439 1364 3.01      
11 A' 1342 1272 0.55      
12 A' 1209 1146 0.61      
13 A' 1205 1142 10.11      
14 A' 951 901 14.60      
15 A' 866 821 17.35      
16 A' 556 527 4.57      
17 A' 358 339 7.02      
18 A' 334 316 0.16      
19 A' 246 234 0.91      
20 A" 3175 3009 11.95      
21 A" 3162 2997 4.80      
22 A" 3075 2915 21.15      
23 A" 1513 1435 2.52      
24 A" 1505 1427 0.28      
25 A" 1421 1347 3.54      
26 A" 1363 1292 0.74      
27 A" 1160 1099 1.33      
28 A" 1008 955 0.45      
29 A" 969 919 0.11      
30 A" 948 898 0.77      
31 A" 332 315 0.48      
32 A" 203 192 0.01      
33 A" 67 63 6.16      

Unscaled Zero Point Vibrational Energy (zpe) 25076.5 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 23770.0 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 MP2/TZVP
ABC
0.25905 0.12452 0.09429

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.273 0.555 2.164
H2 0.273 0.555 -2.164
H3 -1.016 1.395 -1.290
H4 -1.016 1.395 1.290
H5 0.631 2.039 1.267
H6 0.631 2.039 -1.267
C7 0.042 1.123 -1.263
C8 0.042 1.123 1.263
H9 1.412 0.033 0.000
C10 0.355 0.301 0.000
C11 -0.439 -0.957 0.000
H12 -1.523 -0.853 0.000
O13 0.042 -2.088 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.32843.78091.76971.77063.75593.48171.09022.50092.18062.73453.14533.4240
H24.32841.76973.78093.75591.77061.09023.48172.50092.18062.73453.14533.4240
H33.78091.76972.57913.10891.76851.09232.77633.06842.17722.74412.64103.8618
H41.76973.78092.57911.76853.10892.77631.09233.06842.17722.74412.64103.8618
H51.77063.75593.10891.76852.53492.75481.08902.49852.16883.42493.82264.3576
H63.75591.77061.76853.10892.53491.08902.75482.49852.16883.42493.82264.3576
C73.48171.09021.09232.77632.75481.08902.52602.15941.53942.48102.81973.4509
C81.09023.48172.77631.09231.08902.75482.52602.15941.53942.48102.81973.4509
H92.50092.50093.06843.06842.49852.49852.15942.15941.09042.09923.06622.5254
C102.18062.18062.17722.17722.16882.16881.53941.53941.09041.48802.20482.4097
C112.73452.73452.74412.74413.42493.42492.48102.48102.09921.48801.08941.2285
H123.14533.14532.64102.64103.82263.82262.81972.81973.06622.20481.08941.9932
O133.42403.42403.86183.86184.35764.35763.45093.45092.52542.40971.22851.9932

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 108.358 H1 C8 H5 108.678
H1 C8 C10 110.888 H2 C7 H3 108.358
H2 C7 H6 108.678 H2 C7 C10 110.888
H3 C7 H6 108.334 H3 C7 C10 110.494
H4 C8 H5 108.334 H4 C8 C10 110.494
H5 C8 C10 110.020 H6 C7 C10 110.020
C7 C10 C8 110.261 C7 C10 H9 109.202
C7 C10 C11 110.061 C8 C10 H9 109.202
C8 C10 C11 110.061 H9 C10 C11 108.012
C10 C11 H12 116.770 C10 C11 O13 124.738
H12 C11 O13 118.491
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability