The versatile coordination chemistry of 1,3-benzenedicarboxylate in the last 20 years: An investigation from the coordination modes to spectroscopic insights

[Cd2((S,S)-IBPhe)2(2,2′-bipy)2]·2H2O and [Cd2((R,R)-IBPhe)2(2,2′-bipy)2]·2H2O (IBPhe = Isophthaloyl-bis-phenylalanine): One-Dimensional Chiral Coordination Polymers with Selective Dye Adsorption

“…Within the IBPhe 2– ligand, the first carboxylate group represents a μ 3 -chelate-bidentate bridge (η 2 , μ 2 –η 1 :η 1 mode), while the second type represents a μ 3 -chelate-monatomic bridge (η 2 , μ 2 –η 2 mode) (Figure ). , The observed Cd–O and Cd–N distances fall within the ranges of 2.228(7)–2.511(6) and 2.284(6)–2.373(7) Å, respectively. The bond angles of N–Cd–N, N–Cd–O, and O–Cd–O are in the range of 70.7(3)–72.1(3), 78.8(2)–154.2(2), and 54.9°(2)–142.1(2)°, respectively (Table S2).…”

Intensity and lifetime ratiometric luminescent thermometer based on a Tb(iii) coordination polymer

“…Regarding the FTIR analysis of the carboxylate group coordination in 1 , a relevant aspect is the difference between the stretching vibrations of ν as (COO − ) and ν s (COO − ), which is referred to as Δ ν . 34,35 The absorption peaks of ν as (COO)/ ν s (COO − ) at 1650/1375, 1644/1390, 1687/1406 and 1392 cm −1 in the infrared spectra of Na 4 bttb, Na 2 2,5-pzdc and 1 respectively (as shown in Fig. S1, ESI†), led to Δ ν values of 275 (Na 4 bttb), 254 (Na 2 2,5-pzdc), and 281/295 cm −1 ( 1 ).…”

“…Specifically, the carbon-oxygen bonds (C-O) within the carboxylate groups are differently affected by the coordination to the metal center, their values being usually characteristics of the described coordination modes (Table S4, ESI †). 35 Photoluminescence results. The excitation spectrum of 1 obtained in the solid state at 298 K, was recorded with an emission peak at 545 nm.…”

Luminescent lanthanide mixed N‐phthaloylglycinate and terephthalate coordination polymers: Structural and optical properties

“…In recent years, lanthanide coordination polymers have become one of the most attractive research areas focusing on new functional materials with improved chemical and physical properties for applications in magnetism, luminescence, electrochemical sensors, and adsorption separation [1][2][3]. Therefore, carboxylate ligands have become protagonists as they can adopt different coordination modes [4,5], resulting in systems with great structural diversity, ranging from 1D and 2D coordination polymers (CPs) to metal-organic frameworks (MOFs) [6][7][8]. However, most compounds have been obtained with a single type of carboxylate ligand or another ancillary ligand class, completing the first coordination sphere of the metallic centres.…”