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: CCD/6-31G(2df,p)

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 CCD/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at CCD/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-208.669304
Energy at 298.15K 
HF Energy-207.908319
Nuclear repulsion energy120.145603
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 CCD/6-31G(2df,p)
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' 3924 3717 84.17      
2 A' 3237 3066 4.96      
3 A' 3220 3050 5.20      
4 A' 3103 2939 8.89      
5 A' 1793 1699 3.59      
6 A' 1517 1437 14.36      
7 A' 1443 1366 25.82      
8 A' 1424 1349 36.77      
9 A' 1379 1306 27.09      
10 A' 1170 1108 9.68      
11 A' 995 942 102.88      
12 A' 935 886 1.04      
13 A' 683 647 12.79      
14 A' 322 305 1.47      
15 A" 3168 3000 8.98      
16 A" 1522 1442 7.84      
17 A" 1089 1032 0.44      
18 A" 888 841 9.98      
19 A" 501 474 27.40      
20 A" 381 361 92.27      
21 A" 33i 31i 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 16330.3 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 15468.1 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 CCD/6-31G(2df,p)
ABC
0.60010 0.21242 0.16158

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.449 0.475 0.000
C2 0.000 0.860 0.000
N3 1.016 0.091 0.000
O4 0.659 -1.256 0.000
H5 1.513 -1.689 0.000
H6 -1.573 -0.605 0.000
H7 -1.945 0.892 0.880
H8 -1.945 0.892 -0.880
H9 0.259 1.914 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.49982.49552.72813.66881.08671.09281.09282.2340
C21.49981.27432.21622.96432.14942.13512.13511.0855
N32.49551.27431.39371.84832.68123.19163.19161.9739
O42.72812.21621.39370.95752.32523.48893.48893.1952
H53.66882.96431.84830.95753.27104.40444.40443.8152
H61.08672.14942.68122.32523.27101.77621.77623.1148
H71.09282.13513.19163.48894.40441.77621.75972.5839
H81.09282.13513.19163.48894.40441.77621.75972.5839
H92.23401.08551.97393.19523.81523.11482.58392.5839

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 128.016 C1 C2 H9 118.693
C2 C1 H6 111.402 C2 C1 H7 109.887
C2 C1 H8 109.887 C2 N3 O4 112.259
N3 C2 H9 113.291 N3 O4 H5 102.051
H6 C1 H7 109.161 H6 C1 H8 109.161
H7 C1 H8 107.243
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability