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 CH3CHNOH (Acetaldoxime)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/3-21G
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULLultrafine/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-207.694580
Energy at 298.15K 
HF Energy-207.549473
Nuclear repulsion energy117.763241
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 B2PLYP=FULLultrafine/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' 3506 3506 21.56      
2 A' 3213 3213 3.15      
3 A' 3183 3183 11.45      
4 A' 3080 3080 9.86      
5 A' 1662 1662 2.08      
6 A' 1557 1557 13.94      
7 A' 1466 1466 20.53      
8 A' 1390 1390 0.52      
9 A' 1330 1330 65.60      
10 A' 1163 1163 20.17      
11 A' 924 924 44.74      
12 A' 873 873 42.78      
13 A' 660 660 13.69      
14 A' 317 317 2.36      
15 A" 3128 3128 11.94      
16 A" 1584 1584 13.86      
17 A" 1125 1125 0.10      
18 A" 885 885 14.58      
19 A" 478 478 19.19      
20 A" 335 335 130.05      
21 A" 8i 8i 1.57      

Unscaled Zero Point Vibrational Energy (zpe) 15925.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15925.0 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 B2PLYP=FULLultrafine/3-21G
ABC
0.55132 0.21129 0.15724

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.446 0.472 0.000
C2 0.000 0.891 0.000
N3 1.043 0.131 0.000
O4 0.630 -1.304 0.000
H5 1.523 -1.738 0.000
H6 -1.510 -0.613 0.000
H7 -1.953 0.870 0.884
H8 -1.953 0.870 -0.884
H9 0.230 1.951 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.50492.51192.73183.70151.08761.09481.09482.2352
C21.50491.29052.28343.03832.13112.14442.14441.0855
N32.51191.29051.49321.92942.65893.21053.21051.9940
O42.73182.28341.49320.99362.24813.49043.49043.2801
H53.70153.03831.92940.99363.23504.43564.43563.9096
H61.08762.13112.65892.24813.23501.78341.78343.0993
H71.09482.14443.21053.49044.43561.78341.76892.5921
H81.09482.14443.21053.49044.43561.78341.76892.5921
H92.23521.08551.99403.28013.90963.09932.59212.5921

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 127.775 C1 C2 H9 118.385
C2 C1 H6 109.520 C2 C1 H7 110.146
C2 C1 H8 110.146 C2 N3 O4 110.014
N3 C2 H9 113.840 N3 O4 H5 99.813
H6 C1 H7 109.611 H6 C1 H8 109.611
H7 C1 H8 107.783
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability