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The use of pyrazolylborates as ancillaries for lanthanide complexes

Hillier, AC; Liu, SY; Sella, A; Elsegood, MRJ; (2000) The use of pyrazolylborates as ancillaries for lanthanide complexes. JOURNAL OF ALLOYS AND COMPOUNDS , 303 83 - 93.

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Abstract

[Sm(Tp(Me,Me))(2)] reacts with dichalcogenides to give a series of isoleptic complexes [Sm(Tp(Me,Me))(2)ER] (E = O, S, Se, Te; R = phenyl) which have been structurally characterized. An unusual distortion of the Tp(Me,Me) for the selenolates is discussed in relation to fluxionality and decomposition mechanisms for these complexes. The fluxional behaviour of [Sm(Tp(Me,Me))(2)(S2CNR2)] and [Sm(Tp(Me,Me))(2)(S-2-pyr)] is also described. [Sm(Tp(Me,Me))(2)] reacts with Mn-2(CO)(10) to give [Sm(Tp(Me,Me))(2)]Mn(CO)(5) and small amounts of {[Sm(Tp(Me,Me))(2)](2)(mu-O2CH)}Mn(CO)(5) - effectively the room temperature conversion of CO to formate. The corresponding reaction with Re-2(CO)(10) yields [Sm(Tp(Me,Me))(2)]Re(CO)(5) and [Sm(Tp(Me,Me))(2)](2)Re-4(CO)(17). (C) 2000 Elsevier Science S.A. All rights reserved.

Type:Article
Title:The use of pyrazolylborates as ancillaries for lanthanide complexes
Location:ARGONNE NATL LAB, ARGONNE, IL
Keywords:samarium, pyrazolylborate, X-ray diffraction, fluxionality, chalcogenolate, MOLECULAR-STRUCTURES, CRYSTAL-STRUCTURES, REACTIVITY, CHEMISTRY, YB, SAMARIUM, EXAMPLE, LIGANDS, LN=SM, BONDS
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry

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