Claims:1. A process for synthesis of compound of Formula:
Xa– Mz+ – Yb,
wherein Mz+ is a transition metal ion, wherein z is in the range of 1-9; X and Y are anions of Formula R1(COO-)c and R2(COO-)d respectively, wherein ‘c’ and ‘d’ are independently in the range of 1-2; when ‘c’ is 1, R1 is selected from the group consisting of C1-16 alkyl, C5-22 aryl, C1-16 haloalkyl, C3-12 cycloalkyl, C1-20 heteroaryl, and C1-20 heterocyclyl; when ‘c’ is 2, R1 is selected from the group consisting of C1-16 alkanediyl, C5-22 arylene, C1-16 haloalkanediyl, C3-12 cycloalkanediyl, C1-20 heteroarenediyl, C1-20 heterocyclicdiyl; when ‘d’ is 1, R2 is selected from the group consisting of C1-16 alkyl, C5-22 aryl, C1-16 haloalkyl, C3-12 cycloalkyl, C1-20 heteroaryl, and C1-20 heterocyclyl; when ‘d’ is 2, R2 is selected from the group consisting of C1-16 alkanediyl, C5-22 arylene, C1-16 haloalkanediyl, C3-12 cycloalkanediyl, C1-20 heteroarenediyl, C1-20 heterocyclicdiyl; ‘a’ and ‘b’ are in the range of 0-9, wherein ‘a’ and ‘b’ have values such that Xa– Mz+ – Yb is a neutral molecule;
the process comprising the steps of: (a) contacting (i) a transition metal salt of Formula M-S, wherein M is a transition metal and S is a ligand selected from the group consisting of nitrate, sulfate, chloride, sulfite, and nitrite; (ii) at least one carboxylate salt selected from the group consisting of salts of R1(COOH)c and salts of R2(COOH)d; (iii) water; and (iv) at least one organic solvent to obtain a first mixture; and (b) stirring the first mixture to obtain the compound.
2. The process as claimed in claim 1, wherein (a) the transition metal salt to the at least one carboxylate salt molar ratio in the first mixture is in the range of 1: 2 – 1: 6; (b) the transition metal salt to water moles to volume ratio in the first mixture is in the range of 1: 1.5 – 1: 2; and (c) the transition metal salt to the at least one organic solvent moles to volume ratio in the first mixture is in the range of 1: 2 – 1: 4.
3. The process as claimed in claim 1, wherein the salts of R1(COOH)c and the salts of R2(COOH)d are independently selected from the group consisting of lithium salt, sodium salt, potassium salt, trialkylammonium salts, quaternary alkylammonium salts, and combinations thereof.
4. The process as claimed in claim 1, wherein the at least one organic solvent is selected from the group consisting of hexane, toluene, xylenes, diesel, kerosene, naphtha, and combinations thereof.
5. The process as claimed in claim 1, wherein: contacting (i) a transition metal salt of Formula M-S, wherein M is a transition metal and S is a ligand selected from the group consisting of nitrate, sulfate, chloride, sulfite, and nitrite; (ii) at least one carboxylate salt selected from the group consisting of salts of R1(COOH)c and salts of R2(COOH)d; (iii) water; and (iv) at least one organic solvent to obtain a first mixture is carried out at a temperature in the range of 30-80 °C.
6. The process as claimed in claim 1, wherein: contacting (i) a transition metal salt of Formula M-S, wherein M is a transition metal and S is a ligand selected from the group consisting of nitrate, sulfate, chloride, sulfite, and nitrite; (ii) at least one carboxylate salt selected from the group consisting of salts of R1(COOH)c and salts of R2(COOH)d; (iii) water; and (iv) at least one organic solvent to obtain a first mixture is carried out at a temperature of 40 °C.
7. The process as claimed in claim 1, wherein stirring the first mixture to obtain the compound is carried out at a temperature in the range of 30-80 °C for a period in the range of 1-10 hours.
8. The process as claimed in claim 1, wherein stirring the first mixture to obtain the compound is carried out at a temperature of 40 °C for a period of 3 hours.
9. A compound of Formula:
Xa– Mz+ – Yb,
wherein Mz+ is Fe3+; X and Y are independently selected from the group consisting of 2-ethyl hexyl carboxylate and tridecanoate; and ‘a’ and ‘b’ are in

the range of 0 – 3, and have values such that Xa– Mz+ – Yb is a neutral molecule.
, Description:AS ATTACHED