Unique and contrasting structures of homoleptic lanthanum(iii) and cerium(iii) 3,5-dimethylpyrazolates?

Dalton Transactions Pub Date: 2018-04-09 DOI: 10.1039/C8DT00338F

Abstract

Homoleptic [La(Me2pz)3]n (Me2pz = 3,5-dimethylpyrazolato) is a μ–η25-Me2pz coordination polymer with 12-coordinate La atoms in an unusual η55 Me2pz sandwich, whilst the cerium congener forms a molecular tetrametallic cage [Ce4(Me2pz)12] featuring six different Me2pz coordination modes.

Graphical abstract: Unique and contrasting structures of homoleptic lanthanum(iii) and cerium(iii) 3,5-dimethylpyrazolates
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