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US 2017/0284986 A1Published application
Metal coordination complex for detection of vapors and anions and process for the preparation thereof
AssigneeCouncil of Scientific and Industrial Research
InventorsVedavati Gururaj Puranik, Rajesh Ghanshyam Gonnade, Rupesh Liladhar Gawade
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Abstract
The present invention discloses novel multi-action copper complexes which are used for reversible vapochromic detection of polar solvents as well as anion sensing in both aqueous and non-aqueous media.
Claims9
A complex of formula X
- Wherein R1, R2, R3 and R4 is selected from H2O or NO3;
- Provided that when R1, and R3 is NO3 then R2 and R4 is absent.
A process for selective, naked eye detection of anions in aqueous and non-aqueous medium using complex of formula X comprising the steps of:
- i. suspending the powder of complex of formula X in aqueous solution of tetrabutylammonium (TBA) or ammonium salts, alkali metal salts of various anions in the ratio 20:1 followed by observing the change in colour of the solid sample.
Dependencies are inferred from the claim text.