Ethylenediamine-N,N,N′,N′-tetrakis(methylenephosphonic) acid as complexing agent

Copper(II) Complexes of Organophoshonic Acids-A Comparative Study

“…The displacement of the band by 45-90 cm -1 towards lower region has been attributed to the formation of coordination bond between phosphoryl oxygen and metal ion. Such observations have also been made in case of polyaminopolyphosphonic acids reported earlier from these laboratories 15,16 and are also in agreement with the observations of khramov et al 18 . The two more bands at around 1130 and around 1020 cm -1 were observed in all the free ligands correspond to v as PO 2 and V s PO 2 vibrations in HPO 3 group In addition, V as P-OH and V s P-OH bands, corresponding to P-(OH) 2 also appeared at around 1000 and around 940 cm -1 .…”

“…A pure nickel pellet was used as calibrant, crosschecking against Hg [Co (CNS) 4 ] . The instruments and methods used for the remainder of the analyses were the same as described earlier [15][16][17] . Thermal analysis of the compounds was done in the atmosphere of air at national chemical laboratory, Pune.…”

Synthesis and Characterization of Some Metal Complexes With Iea as Ligand Derived From 2-Acetlylindan-1,3-Dione

“…, m/z 263). The resultant (M + -CH 3 ) ions subsequently loss a CN (m/z 26) radical to afford the ions, m/z 222 (II) and , m/z 248 (24). These ions could also arise partially through the direct loss of methyl cyanide from the molecular ion.…”

Synthesis and Characterization of Some Metal Complexes With Iets as Ligand Derived From 2-Acetlylindan-1,3-Dione

“…21,22 Houliham and his coworkers 23 synthesizes 3-substituted-2,4-dihydroindeno(1,2-C) pyrazoles and screened them for their antihypertensieve, contraceptive and abortifacient activity. At a level of 1-100mg/day, pyrazoles 24 actid as antifertility agent in rats and 2-200 mg/ Kg behaved as antihypertensive agents.…”