The syntheses and molecular structures of binuclear manganese carbonyl phenyltellurides: Diamagnetic Mn2(CO)8(μ-TePh)2 and paramagnetic Mn2(CO)6(μ-TePh)3

A. A. Pasynskii, Yu V. Torubaev, I. L. Eremenko, D. A. Vegini, A. I. Yanovskii, Yu T. Struchkov

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Abstract

Heating MnBr(CO)5 with Ph2Te2 in boiling benzene yields diamagnetic Mn2(CO)8(μ-TePh)2 (I), while the photochemical reaction of Mn2(CO)10 with Ph2Te2 in boiling tetrahydrofuran yields paramagnetic Mn2(CO)6(μ-TePh)3 (II) containing one unpaired electron (μeff = 2.5 μB at 296-78 K). According to X-ray structural analysis, I and II contain two and three PhTe bridges respectively. The Mn-Te bonds in II [2.622(1)-2.654(1) Å] are slightly shortened compared to those in I [2.655(6)-2.684(7) Å]. No Mn-Mn bonding occurs in I [Mn⋯Mn distances are 3.921(6) and 4.019(6) Å in the two independent molecules; MnTeMn angles are 95.2(2) and 97.2(2)° respectively], while one-electron metal-metal bonding is observed in II [Mn-Mn 3.058(1) Å MnTeMn angle 70.5(1)-71.2(1)°].

Original languageEnglish
Pages (from-to)866-869
Number of pages4
JournalRussian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
Volume22
Issue number12
StatePublished - 1 Dec 1996

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering

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