1118754-56-5Relevant academic research and scientific papers
Multi-dimensional copper(I) and silver (I) coordination polymers assembled with a pyridyl bis-urea macrocyclic ligand
Som, Bozumeh,Smith, Mark D.,Shimizu, Linda S.
, (2021)
We report the synthesis of a new flexible multimodal macrocyclic ligand, protected pyridyl bis-urea macrocycle 1, and two of its coordination polymers Cu2I2(1)2·(CH3CN)1.63 (2) and [Ag(1)](NO3).(H2O)2.49 (3). The ligand possesses conformational flexibility and adopts different conformations and binding modes depending on the metal ions. The crystal structure of 2 shows a 2D coordination network constructed from rhomboidal Cu2I2 dimer units and 1 as a bridging ligand binding through the pyridyl N atoms. 3 forms a sophisticated 3D structure with 1D chains formed by N-Ag-N links between pyridyl N atoms of two adjacent macrocyclic ligands and Ag(I) ions. These chains form 2D layers through longer Ag-O interactions and the chains are linked together into a 3D network by hydrogen bonding involving interstitial water molecules. These results indicate the potential of ligand 1 in the self-assembly of coordination polymers with diverse topology and functional applications.
BOTH-FACES HINDERED PORPHYRINS. PART 2. SYNTHESIS AND CHARACTERIZATION OF INTERNALLY FIVE-CO-ORDINATED IRON(II)BASKET-HANDLE PORPHYRINS DERIVED FROM 5,10,15,20-TETRAKIS(O-HYDROXYPHENYL)PORPHYRIN
Momenteau, Michel,Mispelter, Joel,Loock, Bernard,Lhoste, Jean-Marc
, p. 61 - 70 (2007/10/02)
Compounds (9), so-called ether 'hanging base' porphyrins, derived from 5,10,15,20-tetrakis(o-hydroxyohenyl)porphyrin in which one of the faces is hindered by a pyridine-3,5-diylbisalkylene bridge and the other face is protected by an alkylene or an p-arylenebisalkylene chain have been synthesized following the concept of the 'basket handle' porphyrins (BHP).From an analysis of the 1H n.m.r. spectra of the iron(II) derivatives (20) at 34 degC, it has been determined that ca. 85percent were high-spin five-coordinated complexes (s=2).Despite the steric hindrance of the distal face, bimolecular associations typical for this class of compounds have been detected except for the most hindered (20c).An additional bispyridine 'basket handle' porphyrin (21) has been synthesized in order to study the dynamics of the pyridine chain.
