کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1308948 1499154 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Syntheses and structures of neutral dicopper(I) halide complexes with bispyridylpyrrole ligand
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Syntheses and structures of neutral dicopper(I) halide complexes with bispyridylpyrrole ligand
چکیده انگلیسی


• Six dicopper(I) complexes have synthesized and structurally characterized.
• Tri-dentated nitrogen donor PDP− as bridging ligand displays an uncommon coordination mode of μ2-κ2(N,N′), κ2(N′,N″).
• The freshly solutions of these complexes in CH2Cl2 display weak 3MLCT luminescence upon excitation at MLCT region.

A new class of neutral dicopper(I)–halide complexes with {Cu2(μ-X)} (X = Cl, Br and I) core supported by bispyridylpyrrole ligand have been synthesized and characterized. Replacements of chloride ligand in [Cu2(μ-X)2(PPh3)3] (X = Cl, Br, I) by the anionic PDPH− (PDPH− = 2,5-bis(2′-pyridyl)pyrrole) or PDPBr− (PDPBr− = 2,5-bis(6′-bromo-2′-pyridyl)-pyrrole) ligand gives complexes 1–6. They are [(PDPH)Cu2(μ-X)(PPh3)2] (X = Cl (1); Br (2); I (3)) and [(PDPBr)Cu2(μ-X)(PPh3)2] (X = Cl (4); Br (5); I (6)). The X-ray crystallographic studies reveal these complexes are isostructural. Two phosphine–copper(I) units are linked by one halogen atom and one nitrogen atom from bridging bispyridylpyrrole ligand to form 4-membered Cu2XN core. Each copper atom is located in the center of distorted tetrahedral geometry. The PDPH− and PDPBr− ligands display μ2-κ2(N,N′), κ2(N′,N″) bonding mode. The separation of Cu⋯Cu in 1–6 is in the range of 2.6708(15)–2.7959(6) Å. The photophysical properties of 1–6 are described.

Dicopper(I) halide complexes with bispyridylpyrrole ligand, [(PDP)Cu2(μ-X)(PPh3)2], are prepared by treatment of [Cu2(μ-Cl)2(PPh3)3] with deprotonated HPDPH. The freshly solutions of 1–3 in CH2Cl2 display weak 3MLCT luminescence upon excitation at 420 nm in the MLCT region.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 435, 24 August 2015, Pages 125–130
نویسندگان
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