β-meso covalently linked novel dipalladium(II) bis-dipyrrin complex

Isar, Prosenjit ; Chatterjee, Tamal ; Ravikanth, Mangalampalli (2016) β-meso covalently linked novel dipalladium(II) bis-dipyrrin complex ChemistrySelect, 1 (6). pp. 1220-1224. ISSN 2365-6549

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/slct.20...

Related URL: http://dx.doi.org/10.1002/slct.201600188

Abstract

β-Meso covalently linked bis-dipyrrin ligand was synthesized by removing BF2 unit from β-dipyrrinyl BODIPY under mild Lewis acid catalyzed conditions and the resulted bis-dipyrrin ligand was used to prepare the first example of dipalladium(II) bis- dipyrrin complex by treating it with Pd(acac) 2 in CH2Cl2 at reflux temperature. The formation of dipalladium bis-dipyrrin complex was confirmed by HR-MS, 1D, 2D NMR spectroscopy and X-ray crystallography. The crystal structure revealed that both the Pd(II)-dipyrrin units are nonplanar and makes an angle of ∼59° with each other. The Pd(II) ions were slightly deviated from the dipyrrin plane and each Pd(II) ion was in square planar geometry co-ordinating to two nitrogen atoms of dipyrromethene unit and two oxygen atoms of acetylacetonate ligand. The preliminary studies indicated that dipalladium bis-dipyrrin complex can be used as efficient catalyst for Suzuki-Miyaura cross coupling reactions.

Item Type:Article
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ID Code:104961
Deposited On:30 Nov 2017 12:30
Last Modified:30 Nov 2017 12:30

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