Diversity in supramolecular self-assembly through hydrogen-bonding interactions of non-coordinated aliphatic –OH group in a series of heterodinuclear CuIIM (M=NaI, ZnII, HgII, SmIII, BiIII, PbII and CdII)

Ligand mediated structural diversity and role of different weak interactions in molecular self-assembly of a series of copper(II)–sodium(I) Schiff-base heterometallic complexes

“…It is coordinated to the sodium ion after deprotonation and thus this unique one dimensional structure is obtained. It is to be noted that another Cu(II)-Na(I) dinuclear structure was reported recently with the similar kind of Schiff base [61] but no deprotonation occurred in that case.…”

“…In the present paper we report a set of closely related Cu-Na hetero bimetallic complexes with suitably designed Schiff-base ligand bearing aromatic p-rings. The six coordination sites and two possible ligand centric p -interaction sites on Salicylaldimines with phenoxo groups in the 2 and 2 0 positions render it suitable for coordinating various p-and d-block metal elements and also various alkali-metal ions [57][58][59][60][61][62] and subsequent intra complex supramolecular interaction. In the present study we have chosen Cu and Na along with a set of three closely related ligands H 2 L1, H 2 L2, H 3 L3 and along with reported earlier [57] H 2 L4 (Scheme 1) which differs from each other systematically.…”

A mixed valent heterometallic CuII/NaI coordination polymer with sodium–phenyl bonds

“…The Schiff base condensation of o-vanillin with 1,3-diamino-2-propanol in methanol 16,17 followed directly by the addition of copper(II) acetate and sodium perchlorate yielded dark green crystals of {[CuNaL]·ClO 4 ·0.5H 2 O} n , 1, in 73% yield after several days of refrigeration. Structural analysis shows that 1 crystallises with two [CuNaL] complexes in the asymmetric unit in a dimeric arrangement with the sodium atoms coordinated to both the alcohol and a phenyl ring in adjacent complexes ( Fig.…”

“…13,14 With the aim of preparing new multinuclear heterometallic coordination polymers 8,15 we have modified the H 2 vanpn Schiff base ligand to incorporate an additional alcoholic donor group, through the substitution of 1,3-diamino-2-propanol for propylenediamine. 16,17 Upon reaction with Cu(II) and sodium perchlorate a new 1D coordination polymer (1) was formed. Its crystal structure, visible fluorescence, infra-red, UV-vis and EPR spectra are presented.…”

Coordination polymer of copper with a silicon-containing Schiff base

“…Schiff base ligands with different number of donor atoms have been extensively used to build supramolecular architectures or discrete systems by coordination of different metal ions from s, p, d or f blocks, with good electrical, magnetic, catalytic or biological properties. [20][21][22][23][24] The structure of Schiff base is based on a specific precursor that may vary in structure and functionality. A large variety of carbonylic and aminic compounds could be used for this purpose.…”