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All results from a given calculation for HOCO (Hydrocarboxyl radical)

using model chemistry: QCISD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

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

Conformer 1 (CS cis)

Jump to S1C2
Energy calculated at QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-188.824053
Energy at 298.15K-188.825142
HF Energy-188.208336
Nuclear repulsion energy63.189094
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/aug-cc-pVTZ
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' 3692 3554 37.11      
2 A' 1867 1797 318.51      
3 A' 1323 1273 0.20      
4 A' 1094 1053 191.12      
5 A' 608 585 33.52      
6 A" 572 551 109.56      

Unscaled Zero Point Vibrational Energy (zpe) 4578.1 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 4405.9 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/aug-cc-pVTZ
ABC
4.72810 0.39245 0.36237

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.443 0.000
O2 -1.062 -0.358 0.000
O3 1.156 0.185 0.000
H4 -0.749 -1.277 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.33021.18421.8767
O21.33022.28320.9715
O31.18422.28322.4015
H41.87670.97152.4015

picture of Hydrocarboxyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 108.228 O2 C1 O3 130.386
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-188.826793
Energy at 298.15K-188.827860
HF Energy-188.209240
Nuclear repulsion energy62.961697
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/aug-cc-pVTZ
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' 3849 3704 124.77      
2 A' 1911 1839 238.14      
3 A' 1270 1223 246.54      
4 A' 1096 1055 73.41      
5 A' 624 600 5.24      
6 A" 530 510 84.24      

Unscaled Zero Point Vibrational Energy (zpe) 4639.9 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 4465.5 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/aug-cc-pVTZ
ABC
5.59516 0.38206 0.35764

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.408 0.000
O2 -0.943 -0.548 0.000
O3 1.169 0.256 0.000
H4 -1.803 -0.115 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4
C11.34261.17851.8775
O21.34262.25960.9627
O31.17852.25962.9950
H41.87750.96272.9950

picture of Hydrocarboxyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H4 107.925 O2 C1 O3 127.222
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability