Low-co-ordination arsenic and antimony compounds: synthesis and characterisation of 2-arsa- and 2-stiba-1,3-dionatolithium(I) complexes, [Li{OC(R)EC(R)O}L](E = As or Sb; R = But, C6H2Pri 3-2,4,6 or C6H2But 3-2,4,6; L = Et2O or MeOCH2CH2OMe) (original) (raw)

Journal of the Chemical Society, Dalton Transactions, 1996

Abstract

RCOCI, afforded the novel 2-arsa-l, 3-dionatolithium (~) complexes [h {OC (R) AsC (R) O} L](R= But, L= dme or Et, O; R= C6H2Pr',-2, 4, 6, L= Et, O; R= C, H, Bu',-2, 4, 6, L= dme), and the first example ofa 2-stiba-1, 3-dionatolithium (1) complex [. t [ii. tOC (Bu') SbC (Bu') O)(dme)~.~]~}, I. X-Ray crystal structural analyses for the complexes with R= But, L= the solid state with respect to the metal and anionic ligands, the dimeric units being linked in an infinite polymeric chain by bridging dme molecules or solvated with Et, O. A dimeric ...

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