Patent ID: 8664400

Claim:
A compound corresponding to the general formula (I) below: in which: R 4 represents a hydrogen atom; R 1 and R 2 represent, independently of each other, a group of formula (II) below: in which: Q 1 represents: a heterocyclic group of formula (i) below: in which R 5 represents a hydrocarbon group; any one of R 6 to R 10 represents a covalent bond linking said heterocyclic group to B, while the others from R 6 to R 10 represent, independently of each other, a hydrogen atom or a hydrocarbon group; or a heterocyclic group of formula (ii) or (iii) below: in which R 5 represents a hydrocarbon group; any one of R 11 to R 17 represents a covalent bond linking said heterocyclic group to B, while the others from R 11 to R 17 represent, independently of each other, a hydrogen atom or a hydrocarbon group, it being possible for R 12 , R 14 and R 16 to also form, respectively with R 11 and/or R 13 , R 13 and/or R 15 , and with R 15 and/or R 17 , a bridging group; or a heterocyclic group of formula (iv) below: in which any one of R 18 to R 25 represents a covalent bond linking said heterocyclic group to B, while the others from R 18 to R 25 represent, independently of each other, a hydrogen atom or a hydrocarbon group, it being possible for R 19 , R 21 , R 23 and R 25 to also form, respectively with R 18 and/or R 20 , R 20 and/or R 22 , R 22 and/or R 24 , and with R 24 and/or R 18 , a bridging group; a heterocyclic group of formula (v) below: in which R 5 represents a hydrocarbon group; W represents an oxygen atom or a group —N(R 31 )— in which R 31 is a hydrogen atom or a hydrocarbon group, or a group —C(R 31 )(R 32 )— in which R 31 and R 32 are, independently of each other, a hydrogen atom or a hydrocarbon group; R 30 represents a covalent bond linking said heterocyclic group to B, while R 26 to R 29 represent, independently of each other, a hydrogen atom or a hydrocarbon group, it being possible for R 27 to also form with R 26 and/or R 28 a bridging group, it being possible for R 28 itself to form with R 29 a bridging group; a is equal to 0 (in which case A is absent) or 1 (in which case A is present); A and B represent the groups below: in which R 33 to R 36 represent, independently of each other, a hydrogen atom or a hydrocarbon group, it being possible for R 33 and R 36 to each also form with R 34 and/or R 35 a bridging group; R 3 represents a hydrogen or halogen atom, a hydrocarbon group or a group of formula (II) as defined above; in which each of the abovementioned hydrocarbon groups may be substituted with one or more substituents, which are identical or different, and comprise one or more heteroatoms; said compound further comprising a number of anions wherein the sum of the negative charge of the anions is equal to the number of positively charged (i), (ii), (iii), (iv) and/or (v) groups within the compound.