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All results from a given calculation for CH3CHNOH (Acetaldoxime)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
1 2 no CS cis 1A'

Conformer 1 (CS trans)

Jump to S1C2
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-208.643144
Energy at 298.15K-208.649185
HF Energy-207.908606
Nuclear repulsion energy117.422461
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 MP2/6-31G(2df,p)
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' 3871 3656 96.55      
2 A' 3224 3045 4.67      
3 A' 3176 3000 8.26      
4 A' 3105 2933 10.67      
5 A' 1708 1613 0.67      
6 A' 1512 1429 7.00      
7 A' 1459 1378 8.33      
8 A' 1415 1336 23.19      
9 A' 1293 1221 52.14      
10 A' 1166 1101 4.74      
11 A' 1039 982 115.11      
12 A' 923 871 6.92      
13 A' 569 537 13.86      
14 A' 322 304 2.37      
15 A" 3184 3007 7.59      
16 A" 1508 1424 7.39      
17 A" 1086 1026 0.43      
18 A" 919 868 8.90      
19 A" 405 383 126.82      
20 A" 289 273 2.13      
21 A" 211 199 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 16191.2 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 15292.6 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 MP2/6-31G(2df,p)
ABC
1.52395 0.14244 0.13348

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.302 1.293 0.000
C2 0.000 0.564 0.000
N3 0.014 -0.712 0.000
O4 1.314 -1.200 0.000
H5 1.167 -2.149 0.000
H6 -2.129 0.584 0.000
H7 -1.382 1.935 0.880
H8 -1.382 1.935 -0.880
H9 0.934 1.130 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.49242.39843.61364.23591.08901.09211.09212.2422
C21.49241.27622.19952.95342.12872.13582.13581.0917
N32.39841.27621.38811.84222.50383.11873.11872.0585
O43.61362.19951.38810.96023.87674.22674.22672.3605
H54.23592.95341.84220.96024.28084.89334.89333.2869
H61.08902.12872.50383.87674.28081.77711.77713.1108
H71.09212.13583.11874.22674.89331.77711.76042.6047
H81.09212.13583.11874.22674.89331.77711.76042.6047
H92.24221.09172.05852.36053.28693.11082.60472.6047

picture of Acetaldoxime state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 119.857 C1 C2 H9 119.577
C2 C1 H6 110.119 C2 C1 H7 110.504
C2 C1 H8 110.504 C2 N3 O4 111.219
N3 C2 H9 120.566 N3 O4 H5 101.793
H6 C1 H7 109.124 H6 C1 H8 109.124
H7 C1 H8 107.408
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-208.642956
Energy at 298.15K 
HF Energy-207.907071
Nuclear repulsion energy119.998913
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 MP2/6-31G(2df,p)
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' 3872 3657 97.68      
2 A' 3250 3069 2.38      
3 A' 3230 3050 4.89      
4 A' 3112 2939 7.03      
5 A' 1716 1621 2.09      
6 A' 1508 1424 12.99      
7 A' 1421 1342 21.42      
8 A' 1393 1316 28.61      
9 A' 1350 1275 38.01      
10 A' 1160 1095 9.00      
11 A' 963 909 113.83      
12 A' 931 879 0.05      
13 A' 675 637 12.84      
14 A' 318 301 1.45      
15 A" 3187 3010 5.66      
16 A" 1515 1431 8.34      
17 A" 1070 1011 0.22      
18 A" 873 824 12.46      
19 A" 501 473 33.33      
20 A" 383 362 82.80      
21 A" 53i 50i 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 16186.3 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 15288.0 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 MP2/6-31G(2df,p)
ABC
0.59622 0.21299 0.16161

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.443 0.480 0.000
C2 0.000 0.865 0.000
N3 1.021 0.087 0.000
O4 0.647 -1.261 0.000
H5 1.506 -1.693 0.000
H6 -1.561 -0.601 0.000
H7 -1.941 0.895 0.879
H8 -1.941 0.895 -0.879
H9 0.271 1.916 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.49392.49572.72063.66351.08651.09211.09212.2366
C21.49391.28352.22222.96832.14082.13132.13131.0853
N32.49571.28351.39931.84512.67213.19403.19401.9762
O42.72062.22221.39930.96142.30483.48163.48163.1990
H53.66352.96831.84510.96143.25584.39954.39953.8140
H61.08652.14082.67212.30483.25581.77561.77563.1125
H71.09212.13133.19403.48164.39951.77561.75762.5905
H81.09212.13133.19403.48164.39951.77561.75762.5905
H92.23661.08531.97623.19903.81403.11252.59052.5905

picture of Acetaldoxime state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 127.781 C1 C2 H9 119.412
C2 C1 H6 111.139 C2 C1 H7 110.038
C2 C1 H8 110.038 C2 N3 O4 111.780
N3 C2 H9 112.808 N3 O4 H5 101.184
H6 C1 H7 109.184 H6 C1 H8 109.184
H7 C1 H8 107.165
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability