The self-assembly of [Co(MeTPyA)(CH 3 COO)]-PF 6 (1) and [Fe(bbp)(CN) 3 ] 2− affords a cyanido-bridged squareshaped {Fe 2 Co 2 } tetranuclear complex, [{Co(MeTPyA)(μ 2 -NC) 2 Fe(bbp)(CN)} 2 ]•3H 2 O (2; MeTPyA = tris((3,5-dimethylpyrazol-1-yl)methyl)amine and H 2 bbp = bis(2-benzimidazolyl)pyridine). The possibility of inducing an intramolecular electron transfer coupled spin transition in 2 by employing protonation as an external stimulant is explored. UV−visible spectrophotometric measurements, electrochemical and 1 H NMR studies establish that a reversible intramolecular electron transfer coupled spin transition can be triggered in 2 upon addition of either acid or base.

Role of structural distortion on the uniaxial magnetic anisotropy of pentagonal bipyramidal Ni(ii) complexes is explored. A simple strategy to enhance the uniaxial magnetic anisotropy in pentagonal bipyramidal Ni(ii) complexes is proposed.

A highly symmetric cyanido bridged tetranuclear square shaped [NiII2FeIII2] aggregate exhibits protonation induced intra-molecular electron transfer in solution and switching between [NiII2FeIII2] and [NiIII2FeII2] states.

A water processable cyanido bridged extended chiral heterobimetallic Co(II)-Fe(III) network is assembled. The unusual water processability of the coordination polymer originate from dangling hydrophilic substituents. The present approach offers a...

Halide double perovskites are a promising class of semiconducting materials for applications in solar cells and other optoelectronic devices. Recently, there has been a surge of interest in these materials...