Coordination compounds of zinc(II) and N-alkylphenothiazines: synthesis and characterization

Promazine Complexes of Transition Metal Ions: Synthesis

“…The broad bands observed in the UV region of 255 -310 nm in the spectra of all complexes can be attributed to the intraligand transitions [15][16][17][18][19][20][21][22][23] . This may be taken as an indirect evidence for involvement of the N atoms in the coordination process, confirming the complex formation between metal and ligand [15][16][17][18][19][20][21][22][23].…”

“…In the spectra of Zn(II), Cd(II) amd Hg(II) complexes, this band shifts to a higher wave number with diminished intensity indicating weakening of the hydrogen bonding between the nitrogen atom of the exocyclic quarternary ammonium ion (R 3 NH) + and halide ions. [12][13][14][15]21,22]. A band observed in the 3000-2800 cm -1 region in the spectrum of P.HCl may be assigned to the heterocyclic nitrogen atom carrying an alkyl amine side chain [21,22].…”

“…Previously, some studies of transition metal-NAPTZ complexes have been reported by several workers [4][5][6][7][8][9][10][11][12][13][14][15][16]. Keshavan and co-workers [4][5][6][7] have synthesized and characterized compounds of selected NAPTZs with molybdenum(IV), tungsten(IV), ruthenium(II/III) and copper(II) ions.…”

“…Kroener et al [9] have studied the X-ray crystal structures of some cis-and trans-bis (2,2′-bipyridine) -bis (phenothiazine-S) ruthenium(II) hexaflurophosphates. Made Gowda et al have previously studied the synthesis and characterization of some coordination compounds of NAPTZs with rhodium (II/III), rhenium (VII), iridium (III /IV), molybdenum (IV/V), zinc(II), palladium (II) and mercury (II) [10][11][12][13][14][15][16]. Chaitanya Lakshmi et al have reported the synthesis and free-radical scavenging activities of transition metal (II)-pyridoxine complexes [17][18][19].…”

Vibrational spectroscopic (FT-IR, FT-Raman) and quantum chemical calculations of 1-(5,5-dioxido-10H-phenothiazin-10-yl)ethanone

“…The ability of phenothiazines to form well defined ion-association products with certain organic compounds and metal complexes forms the basis of utilizing its binary and ternary complexes in chemical and pharmaceutical analysis. Phenothiazines are also reported to form co-ordination complexes with transition metals [22][23][24][25][26][27][28][29][30][31][32] and the charge transfer complexes with organic acceptors [33]. Recently phenothiazine derivatives with high electron donating properties [34] are attracting research interest due to their potential applications in material science.…”