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All results from a given calculation for CH3CHNOH (Acetaldoxime)

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

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-207.111112
Energy at 298.15K-207.117056
HF Energy-206.723615
Nuclear repulsion energy118.183946
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 CID/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' 3661 3407 26.79      
2 A' 3257 3031 3.32      
3 A' 3227 3003 13.80      
4 A' 3124 2907 9.95      
5 A' 1768 1645 5.44      
6 A' 1595 1484 11.88      
7 A' 1507 1403 18.94      
8 A' 1436 1336 0.98      
9 A' 1383 1287 70.70      
10 A' 1192 1109 21.31      
11 A' 958 892 58.73      
12 A' 914 850 8.23      
13 A' 679 632 13.86      
14 A' 328 305 2.92      
15 A" 3171 2951 13.40      
16 A" 1615 1502 13.62      
17 A" 1165 1084 0.36      
18 A" 925 861 10.32      
19 A" 485 451 13.85      
20 A" 335 312 155.31      
21 A" 38 36 1.08      

Unscaled Zero Point Vibrational Energy (zpe) 16381.4 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 15242.9 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 CID/3-21G*
ABC
0.55938 0.21104 0.15775

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/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 0.884 0.000
N3 1.034 0.131 0.000
O4 0.644 -1.294 0.000
H5 1.523 -1.735 0.000
H6 -1.525 -0.616 0.000
H7 -1.954 0.869 0.884
H8 -1.954 0.869 -0.884
H9 0.222 1.945 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.50992.50872.73833.70121.08601.09331.09332.2322
C21.50991.27942.27143.02912.13862.14492.14491.0839
N32.50871.27941.47761.92852.66603.20273.20271.9872
O42.73832.27141.47760.98282.27303.49463.49463.2663
H53.70123.02911.92850.98283.24694.43284.43283.9024
H61.08602.13862.66602.27303.24691.78031.78033.0997
H71.09332.14493.20273.49464.43281.78031.76882.5839
H81.09332.14493.20273.49464.43281.78031.76882.5839
H92.23221.08391.98723.26633.90243.09972.58392.5839

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 127.967 C1 C2 H9 117.830
C2 C1 H6 109.864 C2 C1 H7 109.929
C2 C1 H8 109.929 C2 N3 O4 110.738
N3 C2 H9 114.204 N3 O4 H5 101.309
H6 C1 H7 109.555 H6 C1 H8 109.555
H7 C1 H8 107.981
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability