A process of forming a resveratrol-based flame retardant small molecule with a phosphonate/phosphinate molecule that includes a chloride group and a terminal functional group.

A process of forming a resveratrol-based flame retardant small molecule with a phosphonate/phosphinate molecule that includes a chloride group and a terminal functional group.

A compound containing at least one species of formula (I):

##STR00001## where: A.sup.x is an anion of valency x equal to 1 or 2 chosen from sulfonate, sulfonylimide of SO.sub.2N.sup.SO.sub.2C.sub.yF.sub.2y+1 type with y being an integer between 0 and 4; borate, borane, phosphate, phosphinate, phosphonate, silicate, carbonate, sulfide, selenate, nitrate and perchlorate anions; C.sup.x+ is a counter-cation of the anion A.sup.x, chosen from a proton H.sup.+ and alkali metal and alkaline-earth metal cations; p is an integer ranging from 1 to 10; E is an organic spacer comprising a linear sequence of at least two covalent bonds; n is an integer greater than or equal to 2; and G represents: (a) a group

##STR00002## or (b) a group

##STR00003## the anion A.sup.x being covalently bonded to the polycyclic group Ar.

A compound containing at least one species of formula (I):

##STR00001## where: A.sup.x is an anion of valency x equal to 1 or 2 chosen from sulfonate, sulfonylimide of SO.sub.2N.sup.SO.sub.2C.sub.yF.sub.2y+1 type with y being an integer between 0 and 4; borate, borane, phosphate, phosphinate, phosphonate, silicate, carbonate, sulfide, selenate, nitrate and perchlorate anions; C.sup.x+ is a counter-cation of the anion A.sup.x, chosen from a proton H.sup.+ and alkali metal and alkaline-earth metal cations; p is an integer ranging from 1 to 10; E is an organic spacer comprising a linear sequence of at least two covalent bonds; n is an integer greater than or equal to 2; and G represents: (a) a group

##STR00002## or (b) a group

##STR00003## the anion A.sup.x being covalently bonded to the polycyclic group Ar.

A material with the empirical formula C.sub.3N.sub.3P is made by polymerizing P(CN).sub.3 in a polar aprotic solvent such as acetonitrile, by heating, irradiation with ultraviolet light, and/or using a polymerization initiator and/or a catalyst.

A material with the empirical formula C.sub.3N.sub.3P is made by polymerizing P(CN).sub.3 in a polar aprotic solvent such as acetonitrile, by heating, irradiation with ultraviolet light, and/or using a polymerization initiator and/or a catalyst.