Trinuclear complexes of [CuL] (H2L = N,N′-bis(salicylidene)-1,4-butanediamine) with HgX2 (X−= N3− and NCO−): Facile crystallization with Z′ = 1 and Z′ = 0.5 for both complexes
In: Polyhedron, Jg. 87 (2015-02-01), S. 403-410
Online
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Zugriff:
Two trinuclear centrosymmetric hetero-metallic copper(II)–mercury(II) complexes of general formula [(CuL)2HgX2] (where X = N3− for 1 and 1′ or OCN− for 2 and 2′) have been synthesized using [CuL] as ‘‘ligand complex” (where H2L = N,N′-bis(salicylidene)-1,4-butanediamine) and structurally characterized. Rapid crystallization of both the complexes yielded isomorphous crystals with two independent half molecules (Z′ = 1) in 1 and 2 but the crystals that were grown slowly from the same solutions are not isomorphous and contain single half molecule (1′ and 2′) in the asymmetric units (Z′ = 0.5). Crystal structure analyses reveal that the complexes have discrete trinuclear entity in which two square planar [CuL] units are bonded to a mercury ion through double phenoxido bridges. The Hg(II) is in a six-coordinate distorted octahedral environment being bonded additionally to two mutually trans nitrogen atoms of terminal azide (for 1 and 1′) and cyanate (for 2 and 2′). Higher Z′ compounds are stabilized probably due to weak interactions (C–H⋯N/O and C/H⋯π interactions) that help to hold two independent molecules together.
Titel: |
Trinuclear complexes of [CuL] (H2L = N,N′-bis(salicylidene)-1,4-butanediamine) with HgX2 (X−= N3− and NCO−): Facile crystallization with Z′ = 1 and Z′ = 0.5 for both complexes
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Autor/in / Beteiligte Person: | Hazari, Alokesh ; Ghosh, Ashutosh |
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Zeitschrift: | Polyhedron, Jg. 87 (2015-02-01), S. 403-410 |
Veröffentlichung: | Elsevier BV, 2015 |
Medientyp: | unknown |
ISSN: | 0277-5387 (print) |
DOI: | 10.1016/j.poly.2014.11.034 |
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