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Cover Feature: New Homoleptic Rare Earth 3,5‐Diphenylpyrazolates and 3,5‐Di‐ tert ‐butylpyrazolates and a Noteworthy Structural Discontinuity (Z. Anorg. Allg. Chem. 13/2019)
Author(s) -
Rad Nazli E.,
Junk Peter C.,
Deacon Glen B.,
Wang Jun
Publication year - 2019
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201970132
Subject(s) - homoleptic , rare earth , discontinuity (linguistics) , dimer , trimer , cover (algebra) , chemistry , metal , crystallography , materials science , mineralogy , engineering , philosophy , mechanical engineering , organic chemistry , linguistics
Direct thermally induced reactions between rare earth metals (Ln = Y, Ce, Dy, Ho and Er) activated by Hg metal and 3,5‐di‐phenylpyrazole (Ph2pzH) or 3,5‐di‐tert‐butylpyrazole (tBu 2 pzH) yielded either homoleptic or heteroleptic complexes. The most notable feature is the 7‐coordinate dimer for [Dy 2 (Ph 2 pz) 6 ] with rare μ‐ η 2 : η 1 coordination, which gives a structural and coordination number discontinuity between the 9, 10‐coordinate La, Ce, Nd complexes and the 8‐coordinate dimeric Ho complex. More details are discussed in the article by Nazli E. Rad, Peter C. Junk, Glen B. Deacon, and Jun Wang on 877 ff.