non-innocent ligands به فارسي چي ميشه؟

Question

As redox-active and metal-coordinating systems the dithiolenes and the pterins are potentially non-innocent ligands

توي اين جمله منظور از non- innocent ligands چيه؟

Answer 1

مفهوم براساس ویکیپدیا: پیوندی در یک ترکیب فلزدار که حالت اکسیداسیون آن روشن نیست.

گمون نکنم معادل فارسی براش پیدا کرده باشند. من میگم: پیوند نامکلف

یعنی پیوندی که تکلیفش معلوم نیست. متخصصان بیوشیمی باید تصمیم بگیرند.

Comments

 لیگاند غیر بی گناه (بی ضرر)
 

An innocent ligand is one that binds to a transition metal in such a way that the oxidation state of the metal is able to be determined with clarity, i.e. the method of binding and the contributed charge are both unambiguous.

On the other hand, a non-innocent ligand can bind in multiple ways in which the contributed charge must be stated first before being able to determine the oxidation state of a transition metal with clarity.

Some examples of innocent ligands:

* acetylacetonato (a bidentate that bonds via the π system established by the two oxygens)
* ammine (NH2) (simple monodentate ligand)
* ethylenediamine (H2N−(CH2)2−NH2; cis) (bidentate ligand that binds in a similar way to the ammine ligand)

Some examples of non-innocent ligands:

* Nitrosyl (NO+ vs. NO−)
* Dioxo (O−2 vs. O2−2)
* Dithiolene (three different possible bonding modes!!!)