Isolation and structural characterization of a binuclear intermediate species pertinent to transmetalation of Zn(salphen) complexes and the formation of polynuclear salen structures

Inorganic Chemistry

Volumn 48, Issue 3, 2009, Pages 846-853

  Felices, Leire San ^a   Escudero Adán, Eduardo C ^a   Benet Buchholz, Jordi ^a   Kleij, Arjan W ^a,b  

^a INSTITUTE OF CHEMICAL RESEARCH OF CATALONIA ICIQ   (Spain)

^b INSTITUCIÓ CATALANA DE RECERCA I ESTUDIS AVANÇATS ICREA   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 61449237470     PISSN: 00201669     EISSN: None     Source Type: Journal    
DOI: 10.1021/ic8018265     Document Type: Article

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32. 2O in the same solvent. This implies that DMSO is able to break up the binuclear complex, and observation of the non-assembled individual components is thus evident.
33. Please note: heterogeneous reaction.
34. 2 is in line with the proposed formulation for 5 with a Ni/Zn stochiometry of 1:1. Furthermore, comparison of the solid-state IR spectra between bis-Zn(II)-(salphen) 2, mono-Ni(II)salphen 4, and complex 5 also revealed the formation of a unique complex (see Supporting Information). Isolated 5 was subjected to MALDI-TOF mass spectrometry: due to dissolution, some transmetalation could not be avoided, but nonetheless complex 5 was observed under the applied conditions. The mass spectrum also exhibited a peak at mlz. = 637.0, which was ascribed to a bis-Ni(II) salphen complex and at 460.1 (attributed to Ni complex 4). Finally, the elemental analysis carried out for 5 proved to be also in line with the proposed structure.
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36. 2.