Rhenium (v) oxocomplexes with novel pyrazolyl-based N 4-and N 3 S-donor chelators

C Moura, RF Vítor, L Maria, A Paulo, IC Santos…

Index: Moura, Carolina; Vitor, Rute F.; Maria, Leonor; Paulo, Antonio; Santos, Isabel; Santos, Isabel C. Dalton Transactions, 2006 , # 47 p. 5630 - 5640

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Citation Number: 12

Abstract

The novel pyrazolyl-based ligands 3, 5-Me2pz (CH2) 2NH (CH2) 2NH (CH2) 2NH2 (1) and pz*(CH2) 2NH-Gly-CH2STrit (pz*= pz (8), 3, 5-Me2pz (9), 4-(EtOOC) CH2-3, 5-Me2pz (10)) were synthesized, and their suitability to stabilize Re (V) oxocomplexes was evaluated using different starting materials, namely (NBu4)[ReOCl4],[ReOCl3 (PPh3) 2] and trans-[ReO2 (py) 4] Cl. Compound 1 reacts with trans-[ReO2 (py) 4] Cl yielding the cationic compound [ReO ...