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Among many polynuclear phosphonate complexes of transition metals, the so called mixed ligand com plexes play a special role. The use of additional ligands in the synthesis of polynuclear architecture makes it possible to solve the problem of a low solubility of the phosphonate complexes and, finally, to obtain the polynuclear architecture with a specified set of physi cochemical properties. This class of compounds attracts attention of researchers due to their ability to ion exchange, adsorption, and proton conductivity. This assumes their potential use in photochemistry, electrooptics, and catalysis. In addition, the possibility of using such molecules in sensor devices and as molecular precursors for the preparation of various materials cannot be excluded [1][2][3][4][5][6][7][8][9].The method of self assembling can be distin guished among the methods for the preparation of such homo and heteronuclear molecules. In this method, the heteroligand coordination sphere is formed by phosphonate bridges and, for example, car boxylate anions [10][11][12][13][14][15][16][17][18][19] or other organic ligands of the type of 2 hydroxypyridine derivatives [20][21][22][23].In this work, we used trimethylacetate ligands determining, as a rule, the high spin state of metal atoms in transition metal complexes and containing bulky tert butyl substituents that provide the forma tion of the insular structure with high solubility in organic media. It could be assumed that the use of metal containing fragments with the high spin metal ions in molecular self assembling of a polynuclear structure with phosphonate bridges would result in the formation of a magnetically active architecture, because the presence of unpaired electrons on each metal center induces, as a rule, spin-spin exchange interactions between the adjacent metal ions and the appearance of antiferro , ferri , or ferromagnetic properties [10, 15, 17-19, 24, 25].As shown in earlier works on the synthesis of the phosphonate complexes, the additional use of Hmhp considerably extends possibilities of the synthesis of compounds with higher nuclearity [26,27]. However, the data on the influence of the nature of metal centers and additional ligands and their geometric parameters and synthesis conditions on the geometry of the poly nuclear metal phosphonates are rather restricted and, therefore, they require more detailed investigation.The results on chemical assembling of the polynu clear mixed ligand Ni(II) complexes are presented in this work. EXPERIMENTALComplex I was synthesized in air using commer cially available solvents MeCN and THF. Phenylphos phonic acid (Aldrich), pivalic acid (Aldrich), Hmhp (Fluka), and KOH (analytical grade) were used for the synthesis. Phenylphosphonic acid potassium salt K 2 O 3 PPh was obtained by the reaction of KOH and Н 2 O 3 PPh. Nickel pivalate [Ni 9 (OH) 6 (Piv) 12 (HPiv) 4 ] (II) was synthesized according to a described proce dure [28].Synthesis of [(μ 2 Hmhp) 6 Ni 12 (µ 3 OH) 4 (µ 6 O 3 PPh) 4 (μ 2 Piv) 12 ] · 7.5MeCN ⋅ 1.5THF (I ⋅ 7....

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ChemInform Abstract Reactions between OsO4 and ECl2 (E: S, Se, Te) afford the known compounds OsCl4•(ECl4)2, independent of the molar ratios of the reactants. These compounds are characterized by their IR spectra. Reactions between OsO4 (I) and S2Cl2 (II), SnCl2 (V) (prepared by dissolving S in S2Cl2 (II)), and S2Br2 (VIII) afford the novel compounds (III), (VI) and (IX). OsBr4 (X) reacts with Se (XI) and excess Br2 (XII) to yield the novel OsBr4•(SeBr4)2 (XIII). All of these novel compounds are chracterized by elemental analyses, IR and electronic spectra and magnetic properties. Based on the IR data their structures are discussed.