Solvent-free ball-milling subcomponent synthesis of metallosupramolecular complexes

Chandan Giri; Prasit Kumar Sahoo; Rakesh Puttreddy; Kari Rissanen; Prasenjit Mal

doi:10.1002/chem.201500734

Solvent-free ball-milling subcomponent synthesis of metallosupramolecular complexes

Chemistry. 2015 Apr 20;21(17):6390-3. doi: 10.1002/chem.201500734. Epub 2015 Mar 10.

Authors

Chandan Giri¹, Prasit Kumar Sahoo, Rakesh Puttreddy, Kari Rissanen, Prasenjit Mal

Affiliation

¹ School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, Institute of Physics Campus, P.O. Sainik School, Bhubaneswar, Odisha 751005 (India); University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, 40014 University of Jyvaskyla (Finland).

PMID: 25756211
DOI: 10.1002/chem.201500734

Abstract

Subcomponent self-assembly from components A, B, C, D, and Fe(2+) under solvent-free conditions by self-sorting leads to the construction of three structurally different metallosupramolecular iron(II) complexes. Under carefully selected ball-milling conditions, tetranuclear [Fe4 (AD2 )6 ](4-) 22-component cage 1, dinuclear [Fe2 (BD2 )3 ](2-) 11-component helicate 2, and 5-component mononuclear [Fe(CD3 )](2+) complex 3 were prepared simultaneously in a one-pot reaction from 38 components. Through subcomponent substitution reaction by adding subcomponent B, the [Fe4 (AD2 )6 ](4-) cage converts quantitatively to the [Fe2 (BD2 )3 ](2-) helicate, which, in turn, upon addition of subcomponent C, transforms to [Fe(CD3 )](2+) , following the hierarchical preference based on the thermodynamic stability of the complexes.

Keywords: ball mill; dynamic imine chemistry; mechanochemistry; multicomponent synthesis; self-sorting; supramolecular chemistry.