Diverse Molecular Architectures of Si and Sn [4.4.3.0^1,6]Tridecane Cages Derived from a Mannich Base Possessing Semi‐Rigid Unsymmetrical Podands

Abstract

Three novel atrane-like pentacoordinate silicon and hexa-and mixed penta-and hexacoordinate tin compounds containing [4.4.3.0]tridecane cages have been synthesized. In the present work, the bis-phenol amine tetradentate ligand, N,N-bis(2-hydroxy-3,5-dimethylbenzyl)-2-aminoethanol (H 3 L), was treated with phenyltrichlorosilane, butyltrichlorostannane and phenyltrichlorostannane to give the mononuclear pseudosilatrane 1, dinuclear pseudo-stannatrane 2 and tetranuclear pseudo-stannatrane 3, respectively. These compounds were characterized by spectroscopic techniques ( 1 H,

Dichiral [4.4.3.01,5]tridecane copper(II) cluster derived from a tripodal ligand having unsymmetrical podands and the linker: Synthesis, structure, surface grafting and catalytic aspects

“…The [4.4.3.0 1,5 ]tridecane metal cages are continuously achieving interest due to their fascinating structural attributes and relevance in catalysis. [1][2][3][4][5][6] These are named as 'pseudo-atranes' due to their structural analogy with metallatranes.…”

“…The [4.4.3.0 1,5 ]tridecane metal cages are continuously achieving interest due to their fascinating structural attributes and relevance in catalysis. [1][2][3][4][5][6] These are named as 'pseudo-atranes' due to their structural analogy with metallatranes. The pseudo-atranes with [4.4.3.0 1,5 ] tridecane cage differ from the atranes (having [3.3.3.0 1,5 ] undecane metal cages) in terms of the number or composition of the tricyclic ring atoms.…”

“…[1][2][3][4][5][6] These are named as 'pseudo-atranes' due to their structural analogy with metallatranes. The pseudo-atranes with [4.4.3.0 1,5 ] tridecane cage differ from the atranes (having [3.3.3.0 1,5 ] undecane metal cages) in terms of the number or composition of the tricyclic ring atoms. [7][8][9][10][11] The bulky and less flexible skeletons of [4.4.3.0 1,5 ]tridecane cages encapsulate the metal from one side making the other side available for catalytic reactions.…”

“…The pseudo-atranes with [4.4.3.0 1,5 ] tridecane cage differ from the atranes (having [3.3.3.0 1,5 ] undecane metal cages) in terms of the number or composition of the tricyclic ring atoms. [7][8][9][10][11] The bulky and less flexible skeletons of [4.4.3.0 1,5 ]tridecane cages encapsulate the metal from one side making the other side available for catalytic reactions. For example, tripodal ligands with bisphenolate arms serve as best ancillary ligating frameworks in catalytic applications due to their structural rigidity.…”

“…For example, tripodal ligands with bisphenolate arms serve as best ancillary ligating frameworks in catalytic applications due to their structural rigidity. The most recent contribution of bisphenolate armed [4.4.3.0 1,5 ]tridecane metallatranes as reaction mediators includes copolymerization reactions of CO 2 and cyclohexene oxide, polymerization of methacrylate, hydrophosphination of alkenes, alkynes and heterocumulenes, ring-opening polymerization of L-lactic acid, o-carboxy anhydrides and L-lactide, epoxidation, sulfoxidation and catechol oxidation and cycloaddition of epoxides. [12][13][14][15][16][17][18][19][20][21][22][23][24] The metal centres of metallatrane catalysts are widely distributed among various elements, that is, s-block (K), p-block (Al), d-block (Ti, Zr, Zn, Cr, V, Mo, W) and f-block elements (Y, Yb, Nd, La, Sm).…”