THE STRUCTURE OF COORDINATION COMPOUNDS OF Co(II), Ni(II), Mn(II) AND Zn(II) WITH DIMETHYL ESTER OF TRICHLOROACETYLPHOSPHORYC ACID
E.A. Bundya, K.V. Domasevitch, V. A. Ovchynnikov, V. M. Amirkhanov, V.V. Skopenko.
Department of Inorganic Chemistry, Kiev University, Vladimirskaya St. 64, Kiev 252033, Ukraine
Keywords: carbacylamidophosphates, X-Ray diffraction,
Co(II).
The dimethyl ester of trichloroacetylphosphoryc acid CCl3C(O)N(H)P(O)(OCH3)2 [HL] is representative of carbacylamidophosphates containing structural C(O)N(H)P(O)= core. Derivatives of such tipe appeares wide spectrum of biological activity and some of them are used in the clinical practice as antitumor preparations [1, 2]. On the other hand they may consider as P,N-substituens of analogues of b-diketones and on this point of view they are an interesting objects for the coordination chemistry of metal ions.
The X-ray structures of coordination compounds of the lanthanides ions including carbacilamidophosphates were reported in [3], while the complexes of d-metals with above mentioned ligands are practically not investigated.
The coordination compounds of Co(II), Ni(II), Mn(II) e Zn(II) with dimethyl ester of trichloroacetamidophosphate have been obtained from non-aques solution by exchange reactions and studyed by IR, electronic and NMR spectroscopies. The structure of Co2L42i-PrOH was determined by X-ray analisis. The structure units are centrosymetric dimers in wich cobalt's atoms linked by -oxygen atoms of phosphorilic groups. The central ion have octahedral geometry (4Î[L]+O[L-bridge]+O[i-PrOH]). Two octahedral have one common rib.
The structural data show that conjugation appear when ligands deprotonated and coordinated to metal ion with formation of six membered chelate ring
On the results of X-ray powder data all compounds are isostructural.