Molecular Tectonics: Control of the Dimensionality in Tetramercaptothiacalixarenes Based Coordination Networks

Abstract

Combinations of tetramercaptotetrathiacalix[4]arene pyridyl-appended positional isomers with HgCl2 lead to the formation of neutral coordination networks with their dimensionality imposed by the position of the N atom on the pyridyl group.

Discrete Di‐ and Tetranuclear Silver Complexes Based on ortho‐Imino‐ or ortho‐Amino‐methylpyridyl‐Appended p‐tert‐Butylcalix[4]arene or p‐tert‐Butylthiacalix[4]arene in 1,3‐Alternate Conformation

“…In the present work, the coordinating moieties are connected to the backbone through propyl fragments by using ether junctions. The choice of the pyridyl unit is based on its ability to bind metal cations such as Ag + or Hg 2+ . The design principle discussed above should, on the one hand, lead to the formation of dinuclear species (Figure a and b) through independent binding of the cation by the two chelates located on each face of the ligand.…”

Photoswitchable Supramolecular Systems Based on Carboxyl Derivatives of Thiacalix[4]arene and Their Complexes with Zn(II) and Tb(III) Ions

“…[13][14][15] В настоящей работе для создания фотопере-ключаемых супрамолекулярных систем были использо-ваны карбоксильные производные тиакаликс [4]арена 7, 8, содержащие азобензольные фрагменты, расположен-ные в боковой цепи заместителей нижнего обода (Схема 1). Благодаря своей способности к обратимой фотоизо-меризации, азобензольную группу широко применяют в качестве фотопереключаемого центра в дизайне раз-личных супрамолекулярных систем.…”

Thiacalix[4]arene’s Lower Rim Derivatives: Synthesis and Supramolecular Properties

“…Reaction of 1 and 2 with simple alkyl halides (RI or RBr, R>C 3 H 7 ) in the presence of base generally gives the tetraalkylated products in 1,3-alternate conformation. [9,10,13] In the case of electrophilic reagents containing n-donor Thiacalix [4]arene's Lower Rim Derivatives groups, [9,10,13,[18][19][20] Easily available by the Newman-Kwart rearrangement tetramercaptothiacalix [4]arene 67 [57] adopting 1,3-alternate conformation [58] undergoes easily base-catalyzed etherification with the formation of carboxyl, pyrazolyl, [31] cyanopropoxy, [59] cyanobenzyloxy [59] and α, β, γ pyridylmethoxy [60] derivatives 6871 (Scheme 3).…”

“…[60] Scheme 3. 72: R=CH 3 ; [62] 73: R=CH 2 COOEt; [63] 74: R=CH 2 COOH; [63] 75: R=CH 2 C 6 H 5 ; [64] 76: R=CH 2 CN; [65] 77: R=CH 2 CONHC 6 H 4 NO 2 ; [66] 78: R=(CH 2 ) n Y; [67] 79: R=(CH 2 ) n СH 3 (n=3, 7, 13); [68] 80: R=(CH 2 ) 2 SMe; [69] 81: R=(CH 2 ) 2 SBz; [69] 82: R=(CH 2 ) 3 Set; [69] 83: R=diynyl=CH 2 C≡C-C≡C-C 6 H 5 ; [70] 84: R=CH 2 COC 6 H 5 ; [71] 85: R=C 3 H 7 .…”