Molybdenum(Vi) Methoxyethoxides. Synthesis and Structure of MoO2(OC2H4OMe)2 and Polymeric NaMoO2(OC2H4OMe)3

Synthesis and structure of dioxomolybdenum(VI) complex of amine triphenolato ligand

“…1). Overall structure of MoO 5 N chromophore resembles that found in NH 4 which are characteristic values for this type of bonds in hexa-coordinated dioxomolybdenum(VI) complexes [11,12]. The longest M-OR bonding distance is found for the phenoxide moiety trans to the terminal oxogroup, as expected.…”

Heterobimetallic nickel–sodium and cobalt–sodium complexes of pyridonate ligands

“…The change from 2 may be caused by the absence of co-ordinating solvate molecules which lead to quite different metal co-ordination environments. In 4 the nickel site is sixco-ordinate, but there are only two chelating chp ligands bound to the metal with the remaining two sites occupied by two µ-oxygen donors [O (23) and its symmetry equivalent] from trinucleating chp ligands (Table 5). The nickel site therefore has The crystallographically unique sodium site is quite different to those found in complexes 1-3.…”

“…It is five-co-ordinate, involving one nitrogen and four oxygen atoms. The N-donor [N (13)] is derived from the chp ligand which provides the oxygen donor [O (23)] which bridges Ni(1) and Ni(1A), while the four oxygen donors are derived from a variety of ligands. Atom O(1) is from a µ-bridging water molecule, similar to those found in 1 to 3, and bonds to two sodium centres.…”

“…The Na 2 M 2 cores of 12 and 13 can be combined in a third variant, a chain-polymer based around a {Na 2 M 2 } repeat. 23 Most of the structures reported here belong to this category, with some variation in the exact propagation mode involved in the formation of each polymer.…”

Neue Methoden zur Fluorierung von Verbindungen früher Übergangsmetalle

“…Die Chemie der organometallischen Fluoride weist Komplexe des Wirt-Gast-Typs auf [66]. Bringt man beispielsweise Cp*TiF 3 mit NaF zur Reaktion, so erhält man Heterocuban-Gerüst [73 -76], daneben sind auch trimere [77], dimere [78,79] Tantal-durch Niobatome ersetzt sind [124]. Sie wurde aus NbO(OEt)…”