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All results from a given calculation for H2POH (Phosphinous acid)

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS trans 1A1'
1 2 yes CS cis 1A1'

Conformer 1 (CS trans)

Jump to S1C2
Energy calculated at G3
 hartrees
Energy at 0K-418.181681
Energy at 298.15K-418.177363
HF Energy-417.314061
Nuclear repulsion energy62.220550
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 HF/6-31G*
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' 4106 3868 83.30      
2 A' 2560 2412 163.83      
3 A' 1281 1207 28.91      
4 A' 1227 1156 84.88      
5 A' 1000 942 89.38      
6 A' 889 837 169.65      
7 A" 2547 2400 252.98      
8 A" 999 941 33.18      
9 A" 455 429 139.56      

Unscaled Zero Point Vibrational Energy (zpe) 7531.2 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 7095.9 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 MP2=FULL/6-31G*
ABC
3.69767 0.47771 0.47396

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.107 -0.571 0.000
O2 -0.107 1.100 0.000
H3 0.786 1.486 0.000
H4 0.832 -0.860 1.030
H5 0.832 -0.860 -1.030

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.67042.24171.42351.4235
O21.67040.97212.40502.4050
H32.24170.97212.56292.5629
H41.42352.40502.56292.0606
H51.42352.40502.56292.0606

picture of Phosphinous acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 O2 H3 115.346 O2 P1 H4 101.235
O2 P1 H5 101.235 H4 P1 H5 93.619
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS cis)

Jump to S1C1
Energy calculated at G3
 hartrees
Energy at 0K-418.182062
Energy at 298.15K-418.186237
HF Energy-417.314237
Nuclear repulsion energy62.162855
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 HF/6-31G*
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' 4129 3890 128.76      
2 A' 2610 2459 136.70      
3 A' 1280 1206 42.36      
4 A' 1251 1179 200.86      
5 A' 1003 945 33.55      
6 A' 879 828 132.98      
7 A" 2598 2448 194.73      
8 A" 1007 948 8.01      
9 A" 296 279 122.95      

Unscaled Zero Point Vibrational Energy (zpe) 7526.2 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 7091.2 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/6-31G*
ABC
3.72888 0.47527 0.47205

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.037 -0.576 0.000
O2 0.037 1.105 0.000
H3 0.960 1.404 0.000
H4 -0.908 -0.799 1.030
H5 -0.908 -0.799 -1.030

Atom - Atom Distances (Å)
  P1 O2 H3 H4 H5
P11.68082.18511.41591.4159
O21.68080.97052.36202.3620
H32.18510.97053.06713.0671
H41.41592.36203.06712.0605
H51.41592.36203.06712.0605

picture of Phosphinous acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 O2 H3 110.894 O2 P1 H4 99.393
O2 P1 H5 99.393 H4 P1 H5 94.259
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability