Self-assembly as a route to dinuclear lanthanide complexes with rare coordination pattern of salen-type ligand

Kaczmarek, Małgorzata T.; Kubicki, Maciej; Radecka‐Paryzek, Wanda

doi:10.1007/s11224-010-9611-0

Cited by 14 publications

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“…In the paper by Kaczmarek et al [200] synthesis and characterization by spectroscopic methods and X-ray structural analysis of (La(III), Eu(III), Gd(III), Er(III), Tm(III), and Lu(III) complexes containing N,N 0 -bis(salicylidene)-4-methyl-1,3-phenylenediamine (H 2 L) ligand is presented formed by self-assembly formation of dinuclear lanthanide salicylaldimines. Crystal structure determination revealed a rare coordination pattern of salen-type ligand.…”

Section: Issuementioning

confidence: 99%

Interplay of thermochemistry and Structural Chemistry, the journal (volume 21, 2010) and the discipline

Ponikvar‐Svet

Liebman

2011

Struct Chem

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Section: Issuementioning

confidence: 99%

Interplay of thermochemistry and Structural Chemistry, the journal (volume 21, 2010) and the discipline

Ponikvar‐Svet

Liebman

2011

Struct Chem

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“…During our studies on the complexation properties of salen [N,N 0 -ethylenebis(salicylimine)]-type Schiff base ligands (Kaczmarek et al, 2004(Kaczmarek et al, , 2006Kaczmarek, Kubicki & Radecka-Paryzek, 2010;Kaczmarek, Kubicki, Mondry et al, 2010;Radecka-Paryzek et al, 2007), we have prepared, by condensation reaction between 5-methylsalicylaldehyde and 4-methyl-1,3-phenylenediamine, the new ligand, N,N 0 -bis(5-methylsalicylidene)-4-methyl-1,3-phenylenediamine (H 2 L).…”

Section: Introductionmentioning

confidence: 99%

The trimorphic structure ofN,N′-bis(5-methylsalicylidene)-4-methyl-1,3-phenylenediamine

Kaczmarek

Kubicki

2014

Acta Crystallogr Sect B

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The new Schiff base ligand, N,N'-bis(5-methylsalicylidene)-4-methyl-1,3-phenylenediamine (H2L), has been prepared by condensation of 5-methylsalicylaldehyde with 4-methyl-1,3-phenylenediamine. It was found that this ligand crystallizes in the monoclinic space group P21/c, with Z' = 1. Further studies showed that - as a result of the one-pot metal-promoted reactions - three different polymorphic forms of H2L were obtained, with different numbers (1, 3 or 4) of symmetry-independent molecules depending on the lanthanide metal ion present in the reaction media: La (Z' = 3), Nd (Z' = 4), Sm, Tb, Ho and Yb (all Z' = 1); the last form is identical with that obtained by crystallization of the ligand itself. The geometrical features of all eight independent molecules of H2L are very similar. The relatively strong intramolecular O-H...N hydrogen bonds stabilize almost co-planar conformations of terminal rings and C-C=N-C linkers, at the same time strong hydrogen-bond donors and acceptors involved in these interactions cannot take part in the determination of supramolecular architecture. Therefore, weak intermolecular interactions are important and this can be regarded as one of the reasons for packing conflicts that lead to the presence of polymorphic forms and multiple molecules. The pseudosymmetries are observed in both forms with Z' > 1 and the degree of pseudosymmetry is described by the values of appropriate combinations of the coordinates. In order to elucidate the differences in crystal structures the Hirshfeld surface method was applied. It shows that there are only small differences in the surface shape and in the fingerprint plots; however, the volumes of voids in three structures are significantly different.

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“…The research of compounds containing these cations, their ionic antagonists (like other alkaline metals) with anions existing in body fluids is thus of great importance, as they affect the sodium-potassium pump. In addition, recently, an increasing interest is put on construction of dinuclear, multinuclear and polymeric coordination compounds [24][25][26][27] created by self-assembly [28] of the components [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Alkali metal halogenides coordination compounds with hexamethylenetetramine

et al. 2012

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, have been synthesized and characterised by IR spectroscopy, thermogravimetry coupled with differential thermal analysis, elemental analysis and X-ray crystallography. Both the sodium compounds are isostructural in a solid state, an isostructurality is also observed between compounds containing potassium and rubidium iodides. The sodium compounds exist as dimers (dinuclear core of the complex ion is created by two sodium cations and two water molecules). The molecules of potassium and rubidium compounds are assembled to the two dimensional hybrid nets. The each potentially multifunctional ligand (the hmta) exists in the outer coordination sphere in lithium compounds, acts in a monodentate mode in sodium compounds and in bidentate-bridging modes in potassium and rubidium compounds. The lithium ions are four coordinated, and the sodium, potassium and rubidium ions are six coordinated. Thermal analyses show that the investigated compounds decompose gradually with the formation of alkali metal halides which, during the further heating, are totally removed or they undergo partial decomposition to oxides.

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Self-assembly as a route to dinuclear lanthanide complexes with rare coordination pattern of salen-type ligand

Cited by 14 publications

References 30 publications

Interplay of thermochemistry and Structural Chemistry, the journal (volume 21, 2010) and the discipline

Interplay of thermochemistry and Structural Chemistry, the journal (volume 21, 2010) and the discipline

The trimorphic structure ofN,N′-bis(5-methylsalicylidene)-4-methyl-1,3-phenylenediamine

Alkali metal halogenides coordination compounds with hexamethylenetetramine

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