Determining the Electronic Structure of a Series of [(phen) 3 M] 0 (M = Ti, V, Mo) and [(pdi) 2 M] n + (M = Cr, Mo) Complexes: Coordination of Neutral Ligands vs. π‐Radical Anions

Autor:	Mei Wang, Karl Wieghardt, Thomas Weyhermüller
Rok vydání:	2015
Předmět:	Inorganic Chemistry Crystallography chemistry.chemical_compound Chemistry Molybdenum Radical Pyridine chemistry.chemical_element Electronic structure Spectroscopy Resonance (chemistry) Magnetic susceptibility
Zdroj:	European Journal of Inorganic Chemistry. 2015:3246-3254
ISSN:	1099-0682 1434-1948
Popis:	The molecular and electronic structures of newly synthesized complexes containing 2,6-bis[1-(4-methoxyphenylimino)ethyl]pyridine (pdi) ligands have been determined by high-resolution X-ray crystallography, electronic and electron-spin resonance spectroscopy, and temperature-dependent magnetic susceptibility measurements: [MoIV(pdi··)(pdi2–)]0 (S = 0) 1, [MoIV(pdi2–)(pdi·)](BF4) (S = 1/2) 2, [CrIII(pdi··)(pdi·)]0 (S = 0) 3, [CrIII(pdi·)(pdi0)](BF4)2 (S = 1) 4, [MIII(Mephen·)3]0 (M = Cr 5, Mo 6, Ti 7, and V 8). Complexes 5–8 contain π-radical anions of 2,9-dimethyl-1,10-phenanthroline. Monoanionic radicals (SL = 1/2) are designated (pdi·)1– and (Mephen·)1–, whereas their neutral analogues are (pdi0) and (Mephen0) and the dianions are (pdi··)2– (SL = 1) and (pdi2–)2– (SL = 0). We show here that the oxidation level of these ligands can be determined experimentally in complexes 1–8 by high-quality single-crystal X-ray crystallography at low temperature (ca. 100 K).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::389529a7ed4c9b203eabd56e5bf35c27 https://doi.org/10.1002/ejic.201500420 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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