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: B2PLYP=FULL/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 B2PLYP=FULL/6-31G**
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULL/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-208.932761
Energy at 298.15K 
HF Energy-208.718145
Nuclear repulsion energy119.609934
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 B2PLYP=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3857 3857 72.57      
2 A' 3225 3225 7.28      
3 A' 3206 3206 8.47      
4 A' 3089 3089 12.72      
5 A' 1742 1742 5.35      
6 A' 1516 1516 11.29      
7 A' 1438 1438 12.78      
8 A' 1391 1391 21.42      
9 A' 1354 1354 59.31      
10 A' 1165 1165 10.54      
11 A' 944 944 100.62      
12 A' 923 923 31.14      
13 A' 679 679 13.23      
14 A' 316 316 1.44      
15 A" 3149 3149 14.11      
16 A" 1526 1526 8.99      
17 A" 1083 1083 0.32      
18 A" 872 872 11.29      
19 A" 499 499 35.64      
20 A" 380 380 94.75      
21 A" 46i 46i 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 16152.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16152.8 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 B2PLYP=FULL/6-31G**
ABC
0.59337 0.21112 0.16033

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.447 0.485 0.000
C2 0.000 0.865 0.000
N3 1.022 0.091 0.000
O4 0.651 -1.271 0.000
H5 1.513 -1.704 0.000
H6 -1.570 -0.594 0.000
H7 -1.944 0.903 0.879
H8 -1.944 0.903 -0.879
H9 0.266 1.917 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.49622.50052.73643.68191.08601.09251.09252.2333
C21.49621.28172.23272.98142.14292.13392.13391.0859
N32.50051.28171.41171.86152.68093.19813.19811.9762
O42.73642.23271.41170.96452.32213.49743.49743.2114
H53.68192.98141.86150.96453.27674.41804.41803.8302
H61.08602.14292.68092.32213.27671.77531.77533.1110
H71.09252.13393.19813.49744.41801.77531.75802.5863
H81.09252.13393.19813.49744.41801.77531.75802.5863
H92.23331.08591.97623.21143.83023.11102.58632.5863

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 128.190 C1 C2 H9 118.894
C2 C1 H6 111.178 C2 C1 H7 110.061
C2 C1 H8 110.061 C2 N3 O4 111.895
N3 C2 H9 112.915 N3 O4 H5 101.488
H6 C1 H7 109.152 H6 C1 H8 109.152
H7 C1 H8 107.142
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability