Preparation and structure of [(Cr2F3)-F-III(TPyA)(2)](BF4)(3) [TPyA = tris(2-pyridylmethyl)amine] possessing terminal and bridging fluorides

作者：Zhu Qiuying; Nelson Kendric J; Shum William W; DiPasquale Antonio; Rheingold Arnold L; Miller Joel S^*

来源：Inorganica Chimica Acta, 2009, 362(2): 595-598.

DOI：10.1016/j.ica.2008.04.015

• Dinuclear chromium(III) complex
• Fluoro-bridge
• Crystal structure
• Antiferromagnetic interaction

Reaction of [Cr-III(NCMe)(6)](BF4)(3) with tris(2-pyridylmethyl)amine (TPyA) in MeCN results in a. fluoride abstraction from BF4 - yielding the formation of the unexpected [(Cr2F3)-F-III(TPyA)(2)](BF4)(3) that has a linear, symmetric F bridging two Cr-III ions with each Cr-III ion also having a terminal fluoride. Antiferromagnetic coupling is observed between the two Cr-III ions with a J/k(B) of - 19 K (-13 cm (1)) ( H = -2JS(a) . S-b), and this is an order of magnitude stronger than expected for two bent. fluoride linkages.

• 出版日期2009-1-20