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

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CISD/3-21G
 hartrees
Energy at 0K-207.114521
Energy at 298.15K-207.120455
HF Energy-206.723393
Nuclear repulsion energy118.084813
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 CISD/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' 3648 3434 26.60      
2 A' 3252 3062 3.35      
3 A' 3223 3034 13.53      
4 A' 3120 2936 10.23      
5 A' 1758 1655 6.23      
6 A' 1593 1500 12.13      
7 A' 1505 1417 18.58      
8 A' 1432 1348 0.83      
9 A' 1377 1297 70.22      
10 A' 1189 1119 21.14      
11 A' 953 897 59.12      
12 A' 909 856 10.46      
13 A' 677 637 13.92      
14 A' 327 308 2.79      
15 A" 3166 2981 13.54      
16 A" 1613 1518 13.51      
17 A" 1163 1095 0.35      
18 A" 923 869 10.41      
19 A" 484 455 14.79      
20 A" 335 315 152.96      
21 A" 33 31 1.19      

Unscaled Zero Point Vibrational Energy (zpe) 16340.1 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 15380.9 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 CISD/3-21G
ABC
0.55777 0.21087 0.15753

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.452 0.468 0.000
C2 0.000 0.885 0.000
N3 1.036 0.131 0.000
O4 0.643 -1.296 0.000
H5 1.523 -1.736 0.000
H6 -1.524 -0.616 0.000
H7 -1.955 0.869 0.885
H8 -1.955 0.869 -0.885
H9 0.223 1.946 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51052.51042.73913.70261.08621.09351.09352.2335
C21.51051.28082.27403.03132.13862.14562.14561.0841
N32.51041.28081.48061.92992.66643.20453.20451.9881
O42.73912.27401.48060.98372.27153.49553.49553.2691
H53.70263.03131.92990.98373.24654.43424.43423.9045
H61.08622.13862.66642.27153.24651.78081.78083.1003
H71.09352.14563.20453.49554.43421.78081.76912.5854
H81.09352.14563.20453.49554.43421.78081.76912.5854
H92.23351.08411.98813.26913.90453.10032.58542.5854

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 127.951 C1 C2 H9 117.882
C2 C1 H6 109.811 C2 C1 H7 109.931
C2 C1 H8 109.931 C2 N3 O4 110.663
N3 C2 H9 114.167 N3 O4 H5 101.178
H6 C1 H7 109.577 H6 C1 H8 109.577
H7 C1 H8 107.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability