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All results from a given calculation for CH3CHNOH (Acetaldoxime)

using model chemistry: CCSD(T)/6-31G*

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

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CCSD(T)/6-31G*
 hartrees
Energy at 0K-208.536939
Energy at 298.15K 
HF Energy-207.878188
Nuclear repulsion energy118.932807
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 CCSD(T)/6-31G*
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' 3735 3593        
2 A' 3193 3072        
3 A' 3173 3053        
4 A' 3060 2944        
5 A' 1733 1668        
6 A' 1525 1467        
7 A' 1448 1393        
8 A' 1407 1354        
9 A' 1359 1308        
10 A' 1168 1124        
11 A' 944 908        
12 A' 909 874        
13 A' 670 644        
14 A' 319 307        
15 A" 3119 3001        
16 A" 1532 1474        
17 A" 1087 1046        
18 A" 859 826        
19 A" 482 464        
20 A" 376 362        
21 A" 83i 80i        

Unscaled Zero Point Vibrational Energy (zpe) 16007.0 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 15400.3 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 CCSD(T)/6-31G*
ABC
0.58274 0.21012 0.15904

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.452 0.484 0.000
C2 0.000 0.870 0.000
N3 1.032 0.096 0.000
O4 0.647 -1.276 0.000
H5 1.516 -1.716 0.000
H6 -1.571 -0.602 0.000
H7 -1.950 0.902 0.886
H8 -1.950 0.902 -0.886
H9 0.262 1.930 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.50222.51462.73943.69481.09241.09881.09882.2421
C21.50221.29052.24142.99782.15272.14182.14181.0922
N32.51461.29051.42491.87542.69553.21383.21381.9899
O42.73942.24141.42490.97422.31863.50333.50333.2294
H53.69482.99781.87540.97423.28254.43334.43333.8563
H61.09242.15272.69552.31863.28251.78601.78603.1257
H71.09882.14183.21383.50334.43331.78601.77172.5945
H81.09882.14183.21383.50334.43331.78601.77172.5945
H92.24211.09221.98993.22943.85633.12572.59452.5945

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 128.261 C1 C2 H9 118.737
C2 C1 H6 111.147 C2 C1 H7 109.891
C2 C1 H8 109.891 C2 N3 O4 111.172
N3 C2 H9 113.002 N3 O4 H5 101.169
H6 C1 H7 109.189 H6 C1 H8 109.189
H7 C1 H8 107.453
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability