Welcome to LookChem.com Sign In|Join Free

Article Doi

Hydroxide-bridged Diiron(III) Complexes of Tetraaminodiphenol Macrocyclic Ligands: Structure and Properties

DOI: 10.1039/DT9950001239

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1239 - 1244 (1995)

Update date:2022-08-16

Topics:

Authors:

Nanda, Kausik K.Nanda, Kausik K.

Dutta, Sujit K.Dutta, Sujit K.

Baitalik, SujoyBaitalik, Sujoy

Venkatsubramanian, KrishnanVenkatsubramanian, Krishnan

Nag, KamalakshaNag, Kamalaksha

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1039/DT9950001239

Some dinuclear iron(III) complexes derived from two tetraaminophenol macrocyclic ligands, one (H2L1) contains two -NH(CH2)3NH- and the other (H2L2) one -NH(CH2)3NH- and one -NH(CH2)2NH- units, and an acyclic tetradentate ligand 3 N,N'-bis(2-hydroxybenzyl)-1,3-diaminopropane> have been synthesised and studied.In all of the macrocyclic complexes 1)2>2 1, 12>*2H2O 2, 1)(H2O)2>3*H2O 3, 2)2>4*2H2O 4, 22>*2H2O 5 and 32> 6 only N2O2 donation to the metal centres occurs, while the two unco-ordinated amino nitrogens either remain singly protonated (2 and 5) or one (1) or both of these (3 and 4) is doubly protonated.Variable-temperature magnetic susceptibility data for 1, 4 and 6 indicate weak antiferromagnetic-exchange interactions in each case with J values of: -5.5 (1), -7.3 (4) and -11.8 cm-1 (6).The isomer-shift and quadrupole-splitting values for 1 at 77 K are 0.46 and 0.43 mm s-1, respectively.The redox chemistry of 1 has been studied by cyclic voltammetry and its crystal structure has been determined: monoclinic, space group P21/c, a = 13.448(1), b = 14.847(1), c = 13.442(1) Angstroem, β = 91.48(1) deg, Z = 2, R = 0.048 and R' = 0.050.The two edge-sharing FeO4N2 octahedra are distorted and connected by a centre of inversion.

View More

Products guided by the article

Product name:N,N'-BIS(SALICYLIDENE)-1,3-PROPANEDIAMINE

Cas No:120-70-7

120-70-7

R&D Labs maybe for 120-70-7

Relevant to this article

Hot Product