The binding constants between the two amines shown and porphyrin monomer and dimer were measured in CH₂Cl₂ solution. Account for the relative binding constants obtained and estimate the effective molarities for the second binding constants within the dimer cavity.

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4.
The binding constants between the two amines shown and porphyrin monomer and dimer were measured in CH,Cl2
solution. Account for the relative binding constants obtained and estimate the effective molarities for the second
binding constants within the dimer cavity.
N=
Zn2
N-
N=
Zn2+
RO
OR
N-
Zn2+
3.0 x 103
2.5 x 107
H2N.
NH2
1.4 x 104
5.5 x 106
5. Compound 7 can undergo isomerization upon photo or thermo stimulation.
NH2
NH2
N
N.
N
N.
N.
R
'N
'N'
R
trans-7
cis-7
Draw the structure of the dimers formed between the different geometrical isomers of 7 in CHCI3. Also rank the
stability of the different dimers with explanation.
Transcribed Image Text:4. The binding constants between the two amines shown and porphyrin monomer and dimer were measured in CH,Cl2 solution. Account for the relative binding constants obtained and estimate the effective molarities for the second binding constants within the dimer cavity. N= Zn2 N- N= Zn2+ RO OR N- Zn2+ 3.0 x 103 2.5 x 107 H2N. NH2 1.4 x 104 5.5 x 106 5. Compound 7 can undergo isomerization upon photo or thermo stimulation. NH2 NH2 N N. N N. N. R 'N 'N' R trans-7 cis-7 Draw the structure of the dimers formed between the different geometrical isomers of 7 in CHCI3. Also rank the stability of the different dimers with explanation.
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