Abstract
The photochemical reactions of antiferromagnetic heterochalcogenic complex [Cp′Cr(μ-SPh)]2(μ-Se) (1) (Cp′=η5-CH3C5H4) with Fe3(μ3-Se)2(CO)9 or Mn2(CO)10 at room temperature gives new mixed-metal heterochalcogenic clusters [Cp′Cr(μ-SPh)]2(μ3-Se)Fe3(μ3-Se)2(CO)8 (2), [Cp′Cr(μ-SPh)]2(μ3-Se)Mn2(CO)9 (3) and [Cp′Cr(μ-SPh)]2(μ4-Se)Mn2(CO)8 (4) which are antiferromagnetic (-2J=256, 230 and 324 cm-1, respectively) and characterized by X-ray diffraction analysis (2: Cr-Cr 2.763(1) Å; Fe-Fe 2.6184(9) and 2.706(1) Å; Cr-Se 2.447, 2.460 Å; 3: Cr-Cr 2.762 Å; Mn-Mn 2.920 Å; Cr-Se 2.447, 2.460 Å; 4: Cr-Cr 2.816 Å, Mn-Mn 2.835 Å, Cr-Se 2.464 Å). The photochemical reaction of 1 and Mn2(CO)10 at higher temperature gives the paramagnetic complex Cp′Cr(μ-SPh)3Mn(CO)3 (5) with a weak Cr-Mn bond (3.0239 Å). The new heterochalcogenic complex [Cp′Cr(μ-SPh)]2(μ-Te) (6) which obtained at the interaction of [Cp′Cr(CO)(μ-SPh)]2 with Te and was studied by X-ray method (Cr-Cr 2.772 Å, Cr-S 2.359 Å, Cr-Te 2.601-2.607 Å, Cr-Te-Cr 64.3°), reacted with Co2(CO)8 with formation of the diamagnetic mixed-metal heterochalcogenic cluster [Cp′2Cr2(SPh)](μ3-S)(μ3-Te)Co(CO)2 (7) (Cr-Cr 2. 646 Å, Cr-Co 2.627 Å-2.623 Å, Cr-μ3-S 2.282-2.299 Å, Co-μ3-S 2.199 Å, Cr-μ3-Te 2.630-2.618 Å, Co-μ3-Te 2.466 Å, Cr-μ-SPh 2.335 Å). The role of super-exchange spin-spin interaction through the chalcogen bridge atom is discussed.
Original language | English |
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Pages (from-to) | 91-100 |
Number of pages | 10 |
Journal | Journal of Organometallic Chemistry |
Volume | 671 |
Issue number | 1-2 |
DOIs | |
State | Published - 1 Apr 2003 |
Externally published | Yes |
Keywords
- Chalcogenide
- Chromium
- Cobalt
- Cyclopentadienyl complexes
- Iron
- Magnetic properties
- Manganese
- Metal carbonyls
- Mixed-metal clusters
- X-ray analyses
ASJC Scopus subject areas
- Biochemistry
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Materials Chemistry