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All results from a given calculation for CH3CHNOH (Acetaldoxime)

using model chemistry: MP2=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS cis 1A'

Conformer 1 (CS trans)

Jump to S1C2
Vibrational Frequencies calculated at MP2=FULL/3-21G*
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-207.146857
Energy at 298.15K 
HF Energy-206.719740
Nuclear repulsion energy117.119791
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=FULL/3-21G*
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' 3504 3322 20.80      
2 A' 3223 3055 2.78      
3 A' 3190 3024 12.91      
4 A' 3094 2933 9.45      
5 A' 1629 1545 0.07      
6 A' 1571 1489 11.87      
7 A' 1479 1402 17.80      
8 A' 1400 1327 1.04      
9 A' 1318 1249 59.03      
10 A' 1166 1105 25.09      
11 A' 920 872 33.97      
12 A' 857 813 28.62      
13 A' 654 620 14.48      
14 A' 320 304 3.09      
15 A" 3149 2986 11.90      
16 A" 1602 1518 12.27      
17 A" 1139 1080 0.35      
18 A" 891 845 12.90      
19 A" 468 444 15.28      
20 A" 324 307 138.68      
21 A" 38i 36i 1.99      

Unscaled Zero Point Vibrational Energy (zpe) 15929.0 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 15100.7 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=FULL/3-21G*
ABC
0.54372 0.20921 0.15550

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.453 0.477 0.000
C2 0.000 0.897 0.000
N3 1.052 0.131 0.000
O4 0.628 -1.314 0.000
H5 1.524 -1.746 0.000
H6 -1.512 -0.610 0.000
H7 -1.960 0.874 0.887
H8 -1.960 0.874 -0.887
H9 0.234 1.958 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51212.52902.74553.71511.08941.09571.09572.2445
C21.51211.30132.29783.05002.13502.15112.15111.0872
N32.52901.30131.50591.93492.66983.22653.22652.0023
O42.74552.29781.50590.99452.25303.50243.50243.2958
H53.71513.05001.93490.99453.24154.44764.44763.9222
H61.08942.13502.66982.25303.24151.78581.78583.1061
H71.09572.15113.22653.50244.44761.78581.77402.6027
H81.09572.15113.22653.50244.44761.78581.77402.6027
H92.24451.08722.00233.29583.92223.10612.60272.6027

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 127.872 C1 C2 H9 118.508
C2 C1 H6 109.231 C2 C1 H7 110.127
C2 C1 H8 110.127 C2 N3 O4 109.663
N3 C2 H9 113.620 N3 O4 H5 99.364
H6 C1 H7 109.623 H6 C1 H8 109.623
H7 C1 H8 108.095
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability