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: CCSD(T)=FULL/TZVP

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

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-208.759980
Energy at 298.15K 
HF Energy-207.958000
Nuclear repulsion energy119.389306
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)=FULL/TZVP
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' 3848 3678        
2 A' 3189 3049        
3 A' 3176 3036        
4 A' 3055 2920        
5 A' 1712 1637        
6 A' 1502 1435        
7 A' 1426 1363        
8 A' 1388 1327        
9 A' 1352 1292        
10 A' 1157 1106        
11 A' 930 889        
12 A' 900 861        
13 A' 671 642        
14 A' 322 308        
15 A" 3115 2978        
16 A" 1494 1428        
17 A" 1066 1019        
18 A" 849 812        
19 A" 467 446        
20 A" 378 361        
21 A" 75i 71i        

Unscaled Zero Point Vibrational Energy (zpe) 15960.2 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 15258.0 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 CCSD(T)=FULL/TZVP
ABC
0.58784 0.21110 0.15994

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.450 0.482 0.000
C2 0.000 0.866 0.000
N3 1.025 0.096 0.000
O4 0.650 -1.273 0.000
H5 1.513 -1.702 0.000
H6 -1.576 -0.598 0.000
H7 -1.940 0.901 0.882
H8 -1.940 0.901 -0.882
H9 0.262 1.921 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.49992.50502.73653.68051.08731.09341.09342.2361
C21.49991.28262.23612.98092.15152.13192.13191.0862
N32.50501.28261.41971.86302.69253.19753.19751.9779
O42.73652.23611.41970.96372.32613.49553.49553.2172
H53.68052.98091.86300.96373.28034.41404.41403.8325
H61.08732.15152.69252.32613.28031.77781.77783.1181
H71.09342.13193.19753.49554.41401.77781.76462.5821
H81.09342.13193.19753.49554.41401.77781.76462.5821
H92.23611.08621.97793.21723.83253.11812.58212.5821

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 128.219 C1 C2 H9 118.814
C2 C1 H6 111.532 C2 C1 H7 109.588
C2 C1 H8 109.588 C2 N3 O4 111.586
N3 C2 H9 112.967 N3 O4 H5 101.094
H6 C1 H7 109.227 H6 C1 H8 109.227
H7 C1 H8 107.593
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability