Biswas, Saptarshi ; Saha, Rajat ; Ghosh, Ashutosh (2012) Copper(II)–mercury (II) heterometallic complexes derived from a salen-type ligand: a new coordination mode of the old Schiff base ligand Organometallics, 31 (10). pp. 3844-3850. ISSN 0276-7333
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Official URL: http://pubs.acs.org/doi/abs/10.1021/om201033q
Related URL: http://dx.doi.org/10.1021/om201033q
Abstract
Three heterometallic copper (II)–mercury (II) complexes, [(CuL-CH3)HgCl2] (1), [(CuL-CH3)2HgCl2] (2) and [(CuL-CH2]-HgCl) 2] (3), have been synthesized by reacting the “complex as ligand” [CuL-CH3] with HgCl2 by varying the reaction conditions and stoichiometry of the reactants, where H2]L-CH3 = the di-Schiff base of 1,3-propanediamine and 2-hydroxyacetophenone. All three complexes have been characterized by X-ray single-crystal structure, elemental and spectroscopic analyses. In complex 1, the Hg (II) ion is bonded by two phenoxido oxygen atoms of a [CuL-CH3] moiety and two terminal chloride ions to form a dinuclear species. In the trinuclear complex 2, the central Hg (II) ion is coordinated by two terminal [CuL-CH3] units through one phenoxido oxygen from each unit and two chloride ions. On the other hand, in the tetranuclear complex 3, the Hg (II) ion has a distorted-tetrahedral geometry, being bonded to one chloride, two phenoxido oxygen atoms of one [CuL–CH2]- unit and a methyl carbon atom of another [CuL–CH2]- unit. The structure of complex 3 reveals an unprecedented heptadentate coordination mode (1-κ4NN′OO′:2-κ2OO′:3-κC) of the Schiff base ligand that resulted in a unique organomercury metallamacrocycle.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Chemical Society. |
ID Code: | 108296 |
Deposited On: | 13 Oct 2017 12:48 |
Last Modified: | 13 Oct 2017 12:48 |
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