Zn and Ni complexes of pyridine-2,6-di-carboxyl-ates: crystal field stabilization matters!

ABSTRACT: Six reaction products of Zn^II and Ni^II with pyridine-2,6-di-carb-oxy-lic acid (H₂Lig¹), 4-chloro-pyridine-2,6-di-carb-oxy-lic acid (H₂Lig²) and 4-hy-droxy-pyridine-2,6-di-carb-oxy-lic acid (H₂Lig³) are used to pinpoint the structural consequences of crystal field stabilization by an incomplete d shell. The pseudo-octa-hedral Zn^II coordination sphere in bis-(6-carb-oxy-picolinato)zinc(II) trihydrate, [Zn(C₇H₄NO₄)₂]·3H₂O or [Zn(HLig¹)₂]·3H₂O, (1), is significantly less regular than that about Ni^II in the isostructural compound bis-(6-carb-oxy-picolinato)nickel(II) trihydrate, [Ni(C

SUBMITTER: Kremer M 

PROVIDER: S-EPMC6658973 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature