Never a dull moment with praseodymium metal

Zhifang Guo; Glen B Deacon; Peter C Junk

doi:10.1039/d3dt00534h

Never a dull moment with praseodymium metal

Dalton Trans. 2023 May 22;52(20):6619-6623. doi: 10.1039/d3dt00534h.

Authors

Zhifang Guo^{1

2}, Glen B Deacon¹, Peter C Junk²

Affiliations

¹ School of Chemistry, Monash University, Clayton, VIC, 3800, Australia.
² College of Science & Engineering, James Cook University, Townsville, QLD, 4811, Australia. peter.junk@jcu.edu.au.

PMID: 36976577
DOI: 10.1039/d3dt00534h

Abstract

Unexpectedly, a mixture of bismuth N,N'-bis(2,6-diisopropylphenyl)formamidinates in three different oxidation states namely, [BiI2(DippForm)₂] (1), [BiII2(DippForm)₂(C₆F₅)₂] (2) and [Bi^III(DippForm)₂(C₆F₅)] (3), together with [Pr(DippForm)₂F(thf)]·PhMe (4), [p-HC₆F₄DippForm]·0.5thf (5), and a ring-opened tetrahydrofuran [o-HC₆F₄O(CH₂)₄DippForm] (6) was obtained by the reaction of an excess of praseodymium metal with tris(pentafluorophenyl)bismuth, [Bi(C₆F₅)₃]·0.5dioxane, and bulky N,N'-bis(2,6-diisopropylphenyl)formamidine (DippFormH) in tetrahydrofuran. Similar reactions between praseodymium metal, [Bi(C₆F₅)₃]·0.5dioxane and 3,5-diphenylpyrazole (Ph₂pzH), or 3,5-di-tert-butylpyrazole (tBu₂pzH), yielded the paddlewheel dibismuthanes [BiII2(Ph₂pz)₄]·dioxane (7) and [BiII2(tBu₂pz)₄] (8) respectively.