Functionalized cyclodiphosphazanes cis-[tBuNP(OR)]2 (R=C6H4OMe-o, CH2CH2OMe, CH2CH2SMe, CH2CH2NMe2) as neutral 2e, 4e or 8e donor ligands

Cyclodiophosphazanes containing donor functionalities on phosphorus(III) centers can acts as 2e, 4e, 6e or 8e donors depending on the nature of the metal derivatives employed, stoichiometry and the reaction conditions.