Synthesis and structural characterization of dimethyltin(IV) complexes based on functionalized pyridyl ligands

Momeni, Badri Z.; Jebraeil, S. Mohammad; Patrick, Brian O.; Abd‐El‐Aziz, Alaa S.

doi:10.1016/j.poly.2013.03.020

Cited by 21 publications

(9 citation statements)

References 43 publications

(51 reference statements)

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“…The axial sites are occupied by the methyl groups which deviate slightly from 180° (174.4(2)°). The analysis of the X‐ray data of 3a reveals that the Sn─Cl bond length in [SnMe 2 Cl (ftpy)] + (2.562(3) Å) and [SnMe 2 Cl (Cltpy)] + (2.6216(5) Å) indicates that the trans influence of Cltpy ligand is greater than ftpy.…”

Section: Resultsmentioning

confidence: 99%

“…We found that 4,7‐phen acts as a monodentate as well as a bidentate bridging ligand in the case of diorganotin dichlorides. The reaction of the organotin compounds with terpyridine ligands afford the ionic species hexa‐coordinated complex [SnMe 2 Cl (Xtpy)]Cl or penta‐ and hexa‐coordinated complexes [SnMe 2 Cl (Xtpy)][SnMe 2 Cl 3 ] − (X = H, Cl, OH, SH and furyl) . However, the reaction of tin (II) compound with substituted terpyridine yields the penta‐coordinated tin adduct in a square pyramidal geometry .…”

Section: Discussionmentioning

confidence: 99%

“…For example, it has been shown that the substituents in the carbon ligands attached to tin have a marked effect on the stereochemistry preference for trans ‐ or cis ‐[SnR 2 ] configuration . Analysis of Sn─N bond lengths among the terpyridyl complexes of organotin shows one of the outer pyridine of tpy has a Sn─N bond length greater than 2.4 Å, suggesting them as good candidates for anti‐tumour activity . The analysis of HS for furylterpyridine complexes of dichloro and bis (isothiocyanato) shows that the π–π interaction between molecules in the solid is relatively weak; however, the two‐dimensional fingerprint plots show a contribution of π–π interaction which stabilizes the structures.…”

Section: Discussionmentioning

confidence: 99%

“…Among them, the organotin (IV) complexes featuring a Sn–N bond have been extensively investigated due to their anticancer activity . There are several reports of the existence of penta‐ and hexa‐coordinated tin (IV) complexes in trigonal bipyramidal or octahedral geometries containing various nitrogen ligands . For example, the reaction of 4‐ tert ‐butylpyridine (bupy) as a monodentate ligand with [SnMe 2 Cl 2 ] yields the hexa‐coordinated complex [SnMe 2 Cl 2 (bupy) 2 ] while its reaction with [Sn n Bu 2 Cl 2 ] affords the penta‐coordinated tin (IV) complex [Sn n Bu 2 Cl 2 (bupy)], due to the presence of bulkier n Bu group .…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, there are a few reports on the reaction of organotin compounds with tridentate 2,2′:6′,2″‐terpyridine derivatives. The resulting adducts can be formed as hexa‐ or hepta‐coordinated complexes which are related to the nature of halide or pseudo halide . For example, we have recently reported that the reaction of [SnMe 2 Cl 2 ] with 4′‐functionalized 2,2′:6′,2″‐terpyridines (tpyX; X = Cl, OH, SH) resulted in the formation of complexes [SnMe 2 Cl (tpyCl)] + [SnMe 2 Cl 3 ] − , [SnMe 2 Cl (tpyOH)] + Cl − and [SnMe 2 Cl (tpySH)] + 2 (SnMe 2 Cl 3 ) − Cl − …”

Section: Introductionmentioning

confidence: 99%

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Structure–reactivity studies of chloro and isothiocyanato diorganotin (IV) complexes based on multidentate N‐donor ligands: Synthesis, spectral characterization and crystal structures

Momeni

Sefidabi

Khademi

et al. 2018

Applied Organom Chemis

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The reaction of [SnMe2Cl2] with the bidentate ligand 4,7‐phenanthroline (4,7‐phen) resulted in the formation of [SnMe2Cl2 (4,7‐phen)]n (1a) which is probably a polymeric chain in solution. On the other hand, the reaction of [SnEt2Cl2] with 4,7‐phen afforded the complex [Sn2Et4Cl4 (κ1‐N‐4,7‐phen)2(μ‐κ2‐N,N‐4,7‐phen)] (1b) which dissociates in dimethylsulfoxide solution. The reaction of [SnR2Cl2] (R = Me, Et) with 2,2′‐biquinoline (biq) yielded the complexes [SnMe2Cl2 (κ2‐N,N‐biq)] (2a) and [SnEt2Cl2 (κ1‐N‐biq)2] (2b) in the solid state. Moreover, the reaction of [SnR2Cl2] (R = Me, Et) with the tridentate ligand 4′‐(2‐furyl)‐2,2′:6′,2″‐terpyridine (ftpy) resulted in the formation of ionic penta‐ and hexa‐coordinated tin complexes [SnMe2Cl (ftpy)][SnMe2Cl3] (3a) and [SnEt2Cl (ftpy)]Cl (3b). The reaction of [SnMe2 (NCS)2] with ftpy afforded the hepta‐coordinated complex [SnMe2 (NCS)2(ftpy)] (4a). The products were fully characterized using elemental analysis, and infrared, UV–visible, multinuclear (1H, 13C, 119Sn) NMR, DEPT‐135°, HH‐COSY and HSQC NMR spectroscopies. The crystal structure of complex 3a reveals that it contains the simultaneous presence of penta‐ and hexa‐coordinated tin (IV) atoms. Notably, the crystal structure of complex 4a shows that tin (IV) is hepta‐coordinated in a pentagonal bipyramidal geometry SnC2N5 by three nitrogen atoms of ftpy, two nitrogen atoms of NCS− and two Me groups with trans‐[SnMe2] configuration. These data indicate the influence of halide or pseudo‐halide group on the coordination number and geometry of tin. Hirshfeld surface analysis and two‐dimensional fingerprint plots were calculated for 3a and 4a which show the π–π interaction between molecules in the solid is relatively weak.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structure–reactivity studies of chloro and isothiocyanato diorganotin (IV) complexes based on multidentate N‐donor ligands: Synthesis, spectral characterization and crystal structures

Momeni

Sefidabi

Khademi

et al. 2018

Applied Organom Chemis

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Crystal exploring, Hirshfeld surface analysis, and properties of 4′‐(furan‐2‐yl)‐2,2′:6′,2″‐terpyridine complexes of nickel (II): New precursors for the synthesis of nanoparticles

Momeni

Anari

Torrei

et al. 2021

Applied Organom Chemis

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A series of mono‐ and bis‐terpyridine complexes of nickel (II) based on the 4′‐(furan‐2‐yl)‐2,2′:6′,2″‐terpyridine (ftpy) have been synthesized and structurally characterized using elemental analysis, infrared spectroscopy, and single crystal X‐ray diffraction. The reaction of NiCl2•6H2O with ftpy has been resulted in the formation of new bis‐terpyridine complex [Ni (ftpy)2](PF6)•2H2O (1). The new complex [Ni (ftpy)2](PF6)2 (2), obtained during the crystallization of 1 in methanol, was characterized using X‐ray crystallography, which shows that six nitrogen atoms from terpyridine ligands occupy the coordination sites around the Ni (II) in a distorted octahedral geometry. On the other hand, the reaction of NiCl2•6H2O with ftpy in a 1:2 or 1:1 mole ratio in methanol in the presence of KSCN affords two new thiocyanato complexes [Ni (ftpy)2](SCN)2•2H2O (3) and [Ni (ftpy)(NCS)2(H2O)]•2H2O (4), respectively. The crystal structure of 3 reveals that nickel (II) is hexa‐coordinated in a distorted octahedral geometry NiN6 involving six atoms of two ftpy ligand; the ftpy ligands are perpendicular to each other. The new complex [Ni (ftpy)(NCS)2(DMSO)]•DMSO (5) is obtained during the crystallization of 4 in DMSO. The crystal structure of 5 reveals that the nickel (II) is hexa‐coordinated by three nitrogen atoms of ftpy, two NCS−, a DMSO in a slightly distorted octahedral geometry. The X–H (XH, C, N, O) bond interactions control the arrangement of the supramolecular 3D framework. Hirshfeld surface analyses and two‐dimensional fingerprint plot reveal that the main interactions are H–H contacts for 2, 3, and 5, which comprise 34.1%, 37.2%, and 34.6%, respectively. Thermal decomposition of the coordination complexes led to the formation of Ni, NiO, and Ni2P2O7 nanoparticles (NPs). The resulting NPs were fully characterized by powder XRD, field emission scanning electron microscopy (FESEM), transmission electron microscope (TEM), and energy‐dispersive X‐ray spectroscopy (EDX). The formation of these NPs indicates the role of the precursor complexes and counterion. Our results indicate that the NPs with the smaller size could be obtained at calcination temperature of 600 °C. Thermal and luminescent properties of complexes have been discussed in detail.

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Synthesis, characterization, crystal structure, and DNA interaction of tin complexes containing pyridyl ligands

Momeni

Noroozi

2016

Monatsh Chem

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Synthesis and structural characterization of dimethyltin(IV) complexes based on functionalized pyridyl ligands

Cited by 21 publications

References 43 publications

Structure–reactivity studies of chloro and isothiocyanato diorganotin (IV) complexes based on multidentate N‐donor ligands: Synthesis, spectral characterization and crystal structures

Structure–reactivity studies of chloro and isothiocyanato diorganotin (IV) complexes based on multidentate N‐donor ligands: Synthesis, spectral characterization and crystal structures

Crystal exploring, Hirshfeld surface analysis, and properties of 4′‐(furan‐2‐yl)‐2,2′:6′,2″‐terpyridine complexes of nickel (II): New precursors for the synthesis of nanoparticles

Synthesis, characterization, crystal structure, and DNA interaction of tin complexes containing pyridyl ligands

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