Syntheses and crystal structures of mononuclear and dinuclear (pentamethylcyclopentadienyl)iridium(III) complexes containing 2-mercaptobenzimidazole

Kotera, Mai; Suzuki, Takayoshi

doi:10.1016/j.ica.2010.05.053

Cited by 3 publications

(3 citation statements)

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“…The preparation involves two steps. First, the thiolated bridged iridium dimer (4) was prepared as described in literature by Kotera et al [24]. In a typical reaction, addition of 2-mercaptoethanol and KO t Bu in 2-methoxyethanol to a solution of [Ir [(btp 2 ) (µ-Cl)] 2 (3) in dichloromethane afforded the cyclometalated thiolated bridged dimer (4) as a yellow solid in a good yield.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and Characterization of Iridium Organometallic Complexes Covalently Grafted to Mesoporous Silicates and their Application on Removal of Heavy Metal Ions from Aqueous Solution

Ahmed¹

2017

Nano Res Appl

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In the present paper, a cyclometalated thiolated bridged iridium dimmerswhere L is a bidentate cyclometalated ligand, 2,5-di(thiophen-2-yl) pyridine (dtp) (1) and 2-benzo [4,5] thienyl pyridine (btp) (2) were covalently bonded into silicate framework by hydrolysis and condensation reaction. The new nanohybrid materials were fully characterized by Fourier trans-form infrared spectroscopy (FTIR), X-ray diffractometer (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The results confirmed successful doping of the silicates with phosphorescent iridium organometallic complex. The TEM studies have suggested the nanoparticles nature. The prepared nanohybrids were found to be effective adsorbent for the removal of metal ions such as chromium (Cr

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Section: Resultsmentioning

confidence: 99%

“…, where L is a bidentate cyclometallated ligand, 2,5-di(thiophen-2-yl) pyridine(dtp) (1) and 2-benzo[4,5-]thienylpyridine (btp) (2) were prepared as described in literature Nonoyama [23] and Kotera et al [24].…”

Section: -Methoxyethanol 3-(triethoxysilyl)mentioning

confidence: 99%

Synthesis and Characterization of Iridium Organometallic Complexes Covalently Grafted to Mesoporous Silicates and their Application on Removal of Heavy Metal Ions from Aqueous Solution

Ahmed¹

2017

Nano Res Appl

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“…Zinc(II) has adjustable coordination number and they can simply form different geometry, such as tetrahedral [5], trigonal bipyramidal [6], square planar [7], square pyramidal [8], and octahedral [9]. 2-benzi midazolethiole exists in a thiol and thione tautomers, but thione tautomer is more dominant over thiol isomer, as proved by X-ray crystallography structure analysis, and most spectroscopy identification (Scheme 1) [10,11]. 2-benzimidazolethiole behave as mono and bidentate ligand and coordinate to metals center through nitrogen and sulfur atoms [12].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and X-ray Crystal Structure Analysis of Zinc(II) Complex Based on 2-benzimidazolethiole

et al. 2021

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A novel mononuclear complex of the type [Zn(S-2-BIT)3(O-SO3)(CH3OH)2] (where 2-BIT = 2-benzimidazolethiole) was synthesized and its structure was investigated by elemental analysis, FT-IR spectroscopy, UV-Vis spectroscopy, and single crystal X-ray diffraction. The crystal structure of the complex show that, crystallizes in the triclinic P1 ̅ space group, with a=9.2946(13) Å, b= 10.1997(13) Å, c= 17.345(3) Å, β=105.494(7) օ , V= 1516.3(4) Å 3 , R1= 0.0316, wR2= 0.0843. In this complex, the distorted tetrahedral arrangement around the Zinc(II) atom is formed by three sulfur atoms from the 2-MBI ligand and one oxygen atom from the sulfate ion, and the crystal lattice structure of the complex also contains two uncoordinated methanol molecules that formed N-H ... O and O-H ... O intermolecular hydrogen bonds.

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Synthesis, Structural and Biological Studies of Some Half‐Sandwich d⁶‐Metal Complexes with Pyrimidine‐Based Ligands

et al. 2017

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The reaction of metal precursors {[Cp*MCl2]2 (M=Rh, Ir)} with 2‐aminopyrimidine (L1) gave binuclear complexes as [(Cp*MCl2)2(μ‐L1)], where L1 acted as a bridging ligand. While 2‐mercaptopyrimidine (L2) with [Cp*MCl2]2 {M=Rh(III), Ir(III)} formed mononuclear di substituted complexes as [Cp*M(L2)2], where L2 acted as a chelating as well as a monodentate ligand. The reaction of [CpRu(PPh3)2Cl] with 2‐mercaptopyrimidine (L2) led to the formation of mononuclear complex as general formula [CpRu(PPh3)(L2)] in presence of a base. 2‐Mercaptopyrimidine ligand resulted complexes with strained four‐membered metallacycle while 2‐aminopyrimidine yielded bridged complexes. HOMO‐LUMO energy gaps and UV‐Visible bands were additionally rationalised by the DFT studies. The binding ability of the complexes to the CT‐DNA was confirmed using UV‐Visible and fluorescence spectroscopy. In vitro antibacterial activity of the complexes was evaluated against human pathogenic bacteria. Cytotoxicity of the complexes was examined by the MTT assay over three cancerous and one non‐cancer cell lines viz., BE, HT‐29, MIA−Pa‐Ca2 and ARPE‐19.

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Syntheses and crystal structures of mononuclear and dinuclear (pentamethylcyclopentadienyl)iridium(III) complexes containing 2-mercaptobenzimidazole

Cited by 3 publications

References 16 publications

Synthesis and Characterization of Iridium Organometallic Complexes Covalently Grafted to Mesoporous Silicates and their Application on Removal of Heavy Metal Ions from Aqueous Solution

Synthesis and Characterization of Iridium Organometallic Complexes Covalently Grafted to Mesoporous Silicates and their Application on Removal of Heavy Metal Ions from Aqueous Solution

Synthesis, Characterization, and X-ray Crystal Structure Analysis of Zinc(II) Complex Based on 2-benzimidazolethiole

Synthesis, Structural and Biological Studies of Some Half‐Sandwich d⁶‐Metal Complexes with Pyrimidine‐Based Ligands

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Syntheses and crystal structures of mononuclear and dinuclear (pentamethylcyclopentadienyl)iridium(III) complexes containing 2-mercaptobenzimidazole

Cited by 3 publications

References 16 publications

Synthesis and Characterization of Iridium Organometallic Complexes Covalently Grafted to Mesoporous Silicates and their Application on Removal of Heavy Metal Ions from Aqueous Solution

Synthesis and Characterization of Iridium Organometallic Complexes Covalently Grafted to Mesoporous Silicates and their Application on Removal of Heavy Metal Ions from Aqueous Solution

Synthesis, Characterization, and X-ray Crystal Structure Analysis of Zinc(II) Complex Based on 2-benzimidazolethiole

Synthesis, Structural and Biological Studies of Some Half‐Sandwich d6‐Metal Complexes with Pyrimidine‐Based Ligands

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Synthesis, Structural and Biological Studies of Some Half‐Sandwich d⁶‐Metal Complexes with Pyrimidine‐Based Ligands