Porous networks based on iron(ii) clathrochelate complexes

Abstract

Iron clathrochelate complexes were used for the preparation of microporous polymers. The networks display permanent porosity with apparent Brunauer–Emmett–Teller surface areas of up to SABET = 593 m2 g−1, and they are not susceptible to hydrolytic degradation.

Dramatic Effect of A Ring Size of Alicyclic α-Dioximate Ligand Synthons on Kinetics of the Template Synthesis and of the Acidic Decomposition of the Methylboron-Capped Iron(II) Clathrochelates

“…As can be seen from Table 2 and Table 3 , the φ values for n -butylboron- and adamantylboron-capped iron(II) tris-octoximates [ 5 , 36 ] are higher than those for their tris-nioximate analogs, while other geometrical parameters of their macrobicyclic frameworks are very similar. In particular, the averaged Fe–N distances in all these molecules are close to 1.90 Å, thus they are characteristic of the macrobicyclic iron(II) tris-α-dioximates [ 1 , 2 ], and their oligo- and polymeric derivatives [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 ] as well, which are reported to be the diamagnetic compounds. Indeed, Fe–N distances in the high-spin iron(II) complexes, the derivatives of N -donor ligands, are typically higher than 2.0 Å [ 50 , 51 ].…”

Hybrid iron(ii) phthalocyaninatoclathrochelates with a terminal reactive vinyl group and their organo-inorganic polymeric derivatives: synthetic approaches, X-ray structures and copolymerization with styrene

“…12,13 Palladium-catalyzed Sonogashira cross-coupling of various clathrochelate building blocks with diethynyl-terminated triptycene and fluorene derivatives has been employed 14 for preparation of the corresponding clathrochelate-based copolymers in their high yields. Microporous iron(II) clathrochelate-based networks, which are derivatives of diboron-capped iron(II) tris-α-dioximate cage complexes, have been prepared 15 either by C-C-cross-coupling of their tetrabromoclathrochelate precursor via Suzuki-Miyaura reactions with appropriate diboronic acids, or Sonogashira-Hagihara covalent bonding of suitable apically functionalized macrobicyclic precursors with terminal alkyne groups in their apical substituents with 1,3,5-tribromobenzene as a cross-linking agent. The use of a clathrochelate derivative of the enantiopure Chart 1 Structures of the clathrochelate-based electropolymers 3 (a) and covalent polymers [11][12][13][14] (b).…”

“…The use of a clathrochelate derivative of the enantiopure Chart 1 Structures of the clathrochelate-based electropolymers 3 (a) and covalent polymers [11][12][13][14] (b). α-dioximato ligand synthon allowed 15 to obtain the corresponding polymer product that posseses porous chiral networks.…”

Fluorinated Iron(ii) clathrochelate units in metalorganic based copolymers: improved porosity, iodine uptake, and dye adsorption properties

“…[38][39][40][41] Recently, several iron(II) clathrochelate based polymers were reported disclosing prominent porous properties. [42][43][44] In this prospect, we report herein the synthesis and characterization of ve new iron(II) clathrochelate copolymers CCP1-5 using Sonogashira crosscoupling reaction conditions. Interestingly, the target copolymers exhibit Brunauer-Emmett-Teller (BET) surface area up to 337 m 2 g À1 as well as high iodine uptake and excellent adsorption of organic dyes, namely, methyl blue and methylene blue.…”