Synthesis and crystal structure of a novel triangular macrocyclic molecule, tris(H 2 saloph), † †H2saloph=N,N′-disalicylidene-o-phenylenediamine. and its water complex

Shape‐Persistent Phenylene‐Acetylene Macrocycles: Large Rings—Low Yield?

“…[8,9] Imine formation is a convenient way to generate macrocycles in high yields. [10,11] In recent years, the synthesis of arylacetylene macrocycles containing imine bonds was described, in which the cyclization step involves the formation of a Schiff base (Figure 1). For example, Moore and Zhao prepared the iminecontaining macrocycle 2 in nearly quantitative yield by the condensation of the appropriate diamine and dialdehyde.…”

Synthesis and Characterization of Some Transition and Non-Transition Metal Complexes with New Cyclic and Open Series Containing (N, O) as Donor Atoms

“…They contain at least three donor atoms and the ring should have at least nine atoms (Lindoy, 1989). The macro cyclic ligand have been attracted, the interesting of the scientists because of their properties, such containing of more than donor atoms and the using of their complexes in different fields (Christensen et al, 1971;Akine et al, 2001). The synthesis of transition and non-transition metal macro cyclic complexes is a continuously developing area of investigation in inorganic and bioorganic chemistry (Beswick et al, 1996).…”

Ligands and polymetallic complexes derived from 1,4-diformyl-2,3-dihydroxybenzene and two close analogues

“…Families of polymetallic complexes of acyclic and macrocyclic ligands derived from the dialdehyde "head unit" 1,4-diformyl-2,3-dihydroxybenzene (1) have been prepared and reported by the groups of Nabeshima and MacLachlan. This head unit provides two analogue of 1 is 2, which is a special, rather than a general, case of 4,5-substitution as it features a fused ring.…”

“…The first non-patent report of the use of 1 was by Nabeshima and co-workers: they communicated the preparation and structural characterisation of a metal-free [3 + 3] Schiff base macrocycle [1]. Independently, MacLachlan and co-workers had prepared a similar macrocycle which they reported [2].…”