Synthesis of two covalently linked bis(2,2′:6′,2″-terpyridine) (terpy) chelating ligands with different length spacers, comparison of the crystal structures of their mononuclear nickel(II) complexes, and kinetic and mechanistic studies of the reaction of one ligand with [Fe(terpy)2]2+

Structural Development of Free or Coordinated 4′‐(4‐Pyridyl)‐2,2′:6′,2′′‐terpyridine Ligands through N‐Alkylation: New Strategies for Metallamacrocycle Formation

“…Confirmation that N-alkylation had occurred at both pendant pyridine rings came from the results of a single-crystal structure determination of the complex. 6 ] 4 in acetonitrile/acetone . Although the crystal quality was poor, it was sufficient to permit the gross structural features of 6 ] 4 to be confirmed.…”

“…[4] Metal-directed self-assembly based on the coordination chemistry of ditopic tpy ligands has received significant recent attention. In most cases, metallamacrocycles are formed by the reaction of the ditopic tpy ligand with metal ions, but a significant problem is the competition between the formation of metallamacrocycles (often entropically favoured under conditions of high dilution) [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] and metalla-A C H T U N G T R E N N U N G polymers. [22][23][24][25][26][27][28] Designing spacers between the metal-bonding domains that possess appropriate structural coding is one strategy for driving the reaction towards metallamacrocycle rather than polymer formation.…”

Evaluation of Hexadate Ligand 1, 3-bis(2,2’:6’,2’’-Terpyridyl-5-Ylmethylsulfany l)Propane in the Determination of Iron(II) in Solution by Spectrophotometric and Fluoremetric Methods of Analysis

“…The electronic absorption spectra of L and terpy (3) 2+ which was as earlier discussed by Gleb et al [12]. …”

“…The ligand L was synthesis using the methods reported by Gleb et al 2000 [12] from Bromo-terpy 3 as shown on the scheme provided in Scheme 1.…”

“…In search for even more ligand that forms more stable complexes with metals we synthesis and characterise a new ligand (1,3-bis(2,2':6',2''-terpyridyl-5-ylmethylsulfanyl) propane L as reported by Gleb et al [12]. In the study, two terpyridines derivatives (3) were linked together through the reaction of a dithiol with sython 3.…”