Tetraphenylporphyrin and dipole moments

[nemzy]

A copper(II) ion fits perfectly into the center of tetraphenylporphyrin (TPP), and i was wondering if by doing so, will it become more polar or less polar than the original TPP?

this is something that i forgot, but can someone please correct me if i am wrong?

if a molecule has no dipole moment, then it is non polar right? and the more dipole moment it has, the more polar it is right?

also..tetraphenylchlorine has a dipole moment, while tetraphenyloporphin has no dipole moment right?

 

[chem_tr]

Hello,

A copper ion is present in the center of TPP molecule... It has ionic and coordinatively covalent bonds between Cu and TPP nitrogens. So I presume that the resulting non-ionic molecule would be more polar than original TPP, as there should be an electron flow through Cu center.

 

[ravenprp]

The addition of a copper(II) ion into the center of tetraphenylporphyrin (TPP) would result in an increased dipole moment for the molecule. This is because the copper(II) ion has a positive charge, while the surrounding TPP molecule has a negative charge due to its electron donating groups. This creates a dipole moment where there is a separation of charges within the molecule.

In general, your understanding of dipole moments is correct. A molecule with no dipole moment is considered nonpolar, while a molecule with a larger dipole moment is more polar. However, it is important to note that the polarity of a molecule is also dependent on its molecular structure and the distribution of charges within the molecule.

In terms of tetraphenylchlorine and tetraphenylporphyrin, it is correct that tetraphenylchlorine has a dipole moment while tetraphenylporphyrin does not. This is due to the presence of chlorine atoms in tetraphenylchlorine, which have a higher electronegativity than the carbon atoms in tetraphenylporphyrin. This results in a separation of charges and a dipole moment for tetraphenylchlorine. However, in tetraphenylporphyrin, the electron donating groups on the phenyl rings cancel out the dipole moments, resulting in a nonpolar molecule.