Synthesis of a Clathrochelate Complex with an Appended Pyridine and Its Coordination to a Cobaloxime Complex

Abstract

An iron clathrochelate complex with an appended pyridyl group is synthesized and characterized. The ability of this complex to act as a ligand is demonstrated via its coordination to cobaloxime complexes. A crystal structure of the clathrochelate complex coordinated to a cobaloxime complex indicates that the coordination geometry around cobalt(III) is essentially octahedral, while the encapsulated iron(II) exists in a distorted trigonal prismatic geometry.

A photo- and electrochemical investigation of BODIPY–cobaloxime complexes for hydrogen production, coupled with quantum chemical calculations

“…7,19 The process most likely follows an electrochemical-chemical (EC) mechanism forming a non-electroactive species. 41 The coordination of a cobaloxime moiety (1a and 2a) to the BODIPY compounds produces redox processes which are not fully resolved with one irreversible reduction at À1.49 V and À1.4 V for 1a and 2a respectively which are assigned to the Co III/II reduction. 35 Two unresolved reduction processes at very similar potentials are also visible from the cyclic voltammograms (CV) (Table 3 and ESI †).…”

Clathrochelate monoribbed-functionalized iron(ii) α-dioximates: synthetic pathways and structural and electrochemical features

“…The filtrate was evaporated to dryness, washed with hexane and dried in vacuo. Yield: 0.15 g (12% (27), 295 (15), 340 (4.6), 437 (7.0), 488 nm (20 dm 3 mol Ϫ1 cm Ϫ1 ).…”

Synthesis and structure of the ferrocenylboron-capped clathrochelate iron(ii) oximehydrazonates

“…In the first case, the iron(II) tris oximehydrazonate [2](BF 4 ) 2 was initially obtained and then, in the second step, under went condensation with ferrocenylboronic acid (Scheme 1). The overall yield of the [1](BF 4 ) semiclathrochelate was 23%.…”

“…[1][2][3][4][5][6][7][8][9] In particular, the synthesis of the iron(II) and cobalt(II) semiclathroche lates with the apical ferrocenyl substituents has earlier been reported. The following condensation of these semi сlathrochelates with an aqueous solution of formalde hyde afforded the clathrochelates with 1,3,5 triazacyclo hexane ring as an apical substituent.…”