New coordination features; a bridging pyridine and the forced shortest non-covalent distance between two CO₃^2- species.

ABSTRACT: The aerobic reaction of the multidentate ligand 2,6-bis-(3-oxo-3-(2-hydroxyphenyl)-propionyl)-pyridine, H₄L, with Co(ii) salts in strong basic conditions produces the clusters [Co₄(L)₂(OH)(py)₇]NO₃ (1) and [Co₈Na₄(L)₄(OH)₂(CO₃)₂(py)₁₀](BF₄)₂ (2). Analysis of their structure unveils unusual coordination features including a very rare bridging pyridine ligand or two trapped carbonate anions within one coordination cage, forced to stay at an extremely close distance (d_O···O = 1.946 Å). This unprecedented non-bonding proximity represents a meeting point between long covalent interactions and "intermolecular" co

SUBMITTER: Velasco V 

PROVIDER: S-EPMC5461881 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature