BACKGROUND: THE METAL COMPLEXES ARE ONE OF MOST IMPORTANT COMPOUND IN INORGANIC CHEMISTRY THAT HAVE BEEN USED IN WIDE RANGE OF APPLICATION SUCH AS INDUSTRIAL, ANTIFUNGAL, AND BIOLOGICAL [1]. IN THIS AREA, THERE IS A SPECIAL ATTENTION ON METAL COMPLEXES CONTAINING OF Schiff base LIGANDS. Schiff baseS COMPLEXES ARE USED AS MEDICINE AND WIDE VARIETY OF BIOCHEMICAL ACTIVITY FOR AGAINST BACTERIA, FUNGI AND CERTAIN TYPES OF TUMORS [2]...

A NEW Schiff base LIGAND AND ITS COPPER(II) COMPLEX HAVE BEEN SYNTHESIZED BY THE REACTION OF THE NEW TETRADENTATE Schiff base LIGAND WITH COPPER(II) ACETATE IN 1:1 MOLAR RATIO. IN THIS COMPLEX, THE LIGAND WAS COORDINATED TO THE METALS VIA THE IMINE NITROGEN AND SULFUR ATOMS. THE COMPLEX HAVE BEEN FOUND TO POSSESS 1:1 METAL TO LIGAND STOICHIOMETRY AND THE MOLAR CONDUCTANCE DATA REVEALED THAT THE METAL COMPLEX WERE NON-ELECTROLYTE. THE Schiff base AND ITS COMPLEX HAVE BEEN CHARACTERIZED BY FT-IR, 1H NMR, UV/VIS, ELEMENTAL ANALYSIS AND CONDUCTOMETRY. ELECTROCHEMICAL PROPERTIES OF THE LIGAND AND ITS METAL COMPLEX WERE ALSO INVESTIGATED IN DMSO SOLVENT AT THE 100 MVS−1 SCAN RATE. THE LIGAND AND ITS COPPER COMPLEX SHOWED BOTH QUASI-REVERSIBLE AND IRREVERSIBLE PROCESSES AT THIS SCAN RATE. ...

COBALT Schiff base COMPLEXES HAVE BEEN STUDIED EXTENSIVELY. THEY ARE INVESTIGATED AS MODELS FOR THE COBALAMINE (B12) COENZYMES [1] CLASSIFIED AS AN OXYGEN CARRIER [2]. THEY APPLIED AS A CATALYST FOR THE PREPARATIVE OXYGENATION OF PHENOLS [3] AND AMINES [4]. COBALT (III) SALEN CATALYTIC ACTIVITY HAS BEEN INVESTIGATED. THE CATALYTICALLY ACTIVE SPECIES CONTAINS CO (III) OXIDATION STATE[5].COBALT (III) Schiff base COMPLEXES WITH FORMULA OF [COL(PR3)(OH2)]+ (WHERE L = TETRADENTATE N2O2 Schiff baseS) SHOW THAT THESE TYPES OF COMPLEXESARE IN EQUILIBRIUM WITH PHOSPHINES AND AMINES TO FORM [COL(PR3)2]+ AND [COL(PR3)(AMINE)]+ [6].THE [CO(NAPHEN)(PR3)(OH2)] CLO4 (WHERE NAPHEN = BIS(NAPHTHALDEHYDE)ETYLENEDIIMINE, R = BU AND PH) COMPLEXES WERE SYNTHESISZED IN METHANOL. THE SYNTHESIZED COMPOUNDS WERE CHARACTERIZED BY FT-IR, UV-VIS, 1H NMR SPECTROSCOPY AND ELEMENTAL ANALYSIS TECHNIQUES. THESE COMPLEXES WERE INCOPORATED INTO MONTMORILLONATE-K10 NANOCLAY. THE MODIFIED CLAY WAS IDENTIFIED BY FT-IR, XRD, TG/DTA, TECHNIQUES. ACCORDING TO THE XRD RESULTS OF THE NEW NANOHYBRID MATERIALS, THE Schiff base COMPLEXES ARE INTERCALATED IN THE INTERLAYER SPACES OF THE CLAY. TG/DTG RESULTS SHOW THAT THE INTERCALATION REACTION WAS TAKEN PLACE SUCCESSFULLY.

MACROCYCLIC Schiff-base COMPLEXES CONTAINING THE PYRIDINE MOIETY WAS ONE OF THE EARLY BREAKTHROUGHS IN THE QUEST TO SYNTHESIZE MACROCYLIC METAL COMPLEXES THAT MIGHT MIMIC THE PROPERTIES OF NATURALLY OCCURRING MACROCYLIC COMPLEXES SUCH AS HEMOGLOBIN AND CHLOROPHYLL...

IN THIS WORK, NANOSTRUCTURED PBSE MATERIALS HAVE BEEN PREPARED VIA A SOLVOTHERMAL METHOD AT 180OC WITH THE AID OF NEW LEAD PRECURSORS LIKE Schiff-base COMPOUNDS, PB (SALPN) AND PB (SALOPHEN) COMPLEXES. BESIDES LEAD COMPLEXES AS LEAD PRECURSOR, SECL4

Schiff baseS HAVE OFTEN BEEN USED AS CHELATING LIGANDS IN THE FIELD OF COORDINATION CHEMISTRYAND THEIR METAL COMPLEXES ARE OF GREAT INTEREST FOR MANY YEARS [1]. Schiff base METAL COMPLEXES HAVE BEEN WIDELY STUDIED BECAUSE THEY HAVE INDUSTRIAL, ANTIFUNGAL, ANTIBACTERIAL, ANTICANCER AND HERBICIDAL APPLICATIONS [2]. CHELATING LIGANDS CONTAINING N, S AND O DONOR ATOMS SHOW BROAD BIOLOGICAL ACTIVITY AND ARE OF SPECIAL INTEREST BECAUSE OF THE VARIETY OF WAYS IN WHICH THEY ARE BONDED TO METAL IONS [3].IN THIS WORK SOME COMPLEXES WITH GENERAL FORMULA OF [CO (R2N2S2O2) (OH) (OH2)] (WHERE R =H, NO2, OME AND BR) WERE SYNTHESIZED AND CHARACTERIZED.THE DIAMINE WAS SYNTHESIZED BY COUPLING OF 2-AMINOBENZENETIOL IN PRESENCE OF SODIUM HYDROXIDE AND H2O2 IN ETHANOL. THE Schiff base LIGANDS WERE SYNTHESIZED BY CONDENSATION OF 2-HYDROXYBENZALDEHYDE DRIVATIVES AND DIAMINE. THE STRUCTURE OF SYNTHESIZED Schiff baseS IS SHOWN IN SCHEM1. THE [CO (R2N2S2O2) (OH) (OH2)] COMPLEXES WERE PREPARED BY REACTION OF Schiff base LIGANDS AND CO (OAC)2.4H2O IN METHANOL AS SOLVENT.