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All results from a given calculation for CH2CH2OH (2-hydroxy ethyl radical)

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS 2A'
1 2 yes C1 2A

Conformer 1 (CS)

Jump to S1C2
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-152.897730
Energy at 298.15K 
HF Energy-152.585618
Nuclear repulsion energy73.200217
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 QCISD/3-21G
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' 3431 3326 5.54      
2 A' 3134 3038 8.09      
3 A' 2988 2896 44.99      
4 A' 1601 1552 2.23      
5 A' 1522 1475 0.30      
6 A' 1472 1426 4.63      
7 A' 1268 1229 57.18      
8 A' 992 961 25.19      
9 A' 940 911 39.27      
10 A' 617 598 20.01      
11 A' 356 345 31.44      
12 A" 3239 3139 14.13      
13 A" 3014 2921 59.00      
14 A" 1324 1284 0.01      
15 A" 1175 1139 1.07      
16 A" 844 818 0.15      
17 A" 284 276 144.43      
18 A" 55i 54i 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14073.0 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 13639.5 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 QCISD/3-21G
ABC
1.18430 0.31842 0.27882

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.125 -0.412 0.000
C2 0.000 0.565 0.000
C3 1.286 -0.227 0.000
H4 -1.965 0.125 0.000
H5 -0.039 1.212 0.892
H6 -0.039 1.212 -0.892
H7 1.666 -0.638 -0.933
H8 1.666 -0.638 0.933

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8
O11.49022.41780.99662.14792.14792.95142.9514
C21.49021.51002.01351.10281.10282.25632.2563
C32.41781.51003.26942.14992.14991.08771.0877
H40.99662.01353.26942.38462.38463.82533.8253
H52.14791.10282.14992.38461.78413.10772.5159
H62.14791.10282.14992.38461.78412.51593.1077
H72.95142.25631.08773.82533.10772.51591.8655
H82.95142.25631.08773.82532.51593.10771.8655

picture of 2-hydroxy ethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 107.392 O1 C2 H5 110.977
O1 C2 H6 110.977 C2 O1 H4 106.432
C2 C3 H7 119.707 C2 C3 H8 119.707
C3 C2 H5 109.758 C3 C2 H6 109.758
H5 C2 H6 107.979 H7 C3 H8 118.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-152.899003
Energy at 298.15K-152.903573
HF Energy-152.587187
Nuclear repulsion energy73.557129
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 QCISD/3-21G
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 3471 3365 1.85      
2 A 3261 3161 6.32      
3 A 3146 3049 5.95      
4 A 2959 2868 57.67      
5 A 2917 2827 57.20      
6 A 1590 1541 2.62      
7 A 1490 1444 2.83      
8 A 1472 1426 2.73      
9 A 1291 1252 58.08      
10 A 1231 1193 2.41      
11 A 1092 1058 1.24      
12 A 1029 998 40.15      
13 A 987 957 7.06      
14 A 867 840 14.59      
15 A 423 410 16.13      
16 A 376 364 63.99      
17 A 281 272 112.05      
18 A 132 128 21.92      

Unscaled Zero Point Vibrational Energy (zpe) 14006.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 13575.5 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 QCISD/3-21G
ABC
1.24873 0.32796 0.27412

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.130 -0.383 -0.055
C2 0.002 0.545 0.034
C3 1.261 -0.272 -0.017
H4 -1.969 0.117 0.099
H5 -0.024 1.138 0.976
H6 0.012 1.287 -0.791
H7 2.220 0.200 -0.218
H8 1.226 -1.316 0.279

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8
O11.46652.39450.98812.14442.15233.40442.5560
C21.46651.50202.01771.11351.10882.25862.2408
C32.39451.50203.25542.15092.14201.08731.0860
H40.98812.01773.25542.36492.46624.20143.5057
H52.14441.11352.15092.36491.77282.70952.8407
H62.15231.10882.14202.46621.77282.52633.0646
H73.40442.25861.08734.20142.70952.52631.8803
H82.55602.24081.08603.50572.84073.06461.8803

picture of 2-hydroxy ethyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 107.531 O1 C2 H5 111.711
O1 C2 H6 112.652 C2 O1 H4 109.015
C2 C3 H7 120.609 C2 C3 H8 119.089
C3 C2 H5 109.760 C3 C2 H6 109.339
H5 C2 H6 105.830 H7 C3 H8 119.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability