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: MP2=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 MP2=FULL/TZVP
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/TZVP
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2=FULL/TZVP
 hartrees
Energy at 0K-208.699854
Energy at 298.15K 
HF Energy-207.958695
Nuclear repulsion energy119.826758
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 MP2=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' 3863 3680 92.72      
2 A' 3232 3079 6.25      
3 A' 3217 3064 3.83      
4 A' 3093 2947 11.59      
5 A' 1709 1628 3.75      
6 A' 1508 1437 13.29      
7 A' 1429 1362 12.90      
8 A' 1388 1323 11.59      
9 A' 1351 1287 64.63      
10 A' 1165 1110 7.80      
11 A' 942 898 81.78      
12 A' 919 875 35.92      
13 A' 679 647 12.31      
14 A' 322 307 1.68      
15 A" 3166 3016 9.92      
16 A" 1501 1430 10.93      
17 A" 1072 1022 1.80      
18 A" 863 822 14.43      
19 A" 478 455 36.61      
20 A" 383 364 100.80      
21 A" 79i 75i 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 16099.3 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 15337.8 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 MP2=FULL/TZVP
ABC
0.59467 0.21221 0.16105

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.443 0.486 0.000
C2 0.000 0.864 0.000
N3 1.020 0.090 0.000
O4 0.646 -1.270 0.000
H5 1.508 -1.700 0.000
H6 -1.571 -0.591 0.000
H7 -1.933 0.905 0.879
H8 -1.933 0.905 -0.879
H9 0.274 1.912 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.49142.49462.72893.67251.08451.09021.09022.2319
C21.49141.28082.22982.97482.14152.12382.12381.0835
N32.49461.28081.41051.85512.67963.18743.18741.9694
O42.72892.22981.41050.96362.31923.48653.48653.2041
H53.67252.97481.85510.96363.27344.40484.40483.8174
H61.08452.14152.67962.31923.27341.77241.77243.1099
H71.09022.12383.18743.48654.40481.77241.75782.5802
H81.09022.12383.18743.48654.40481.77241.75782.5802
H92.23191.08351.96943.20413.81743.10992.58022.5802

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 128.125 C1 C2 H9 119.331
C2 C1 H6 111.502 C2 C1 H7 109.732
C2 C1 H8 109.732 C2 N3 O4 111.804
N3 C2 H9 112.544 N3 O4 H5 101.105
H6 C1 H7 109.168 H6 C1 H8 109.168
H7 C1 H8 107.447
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability