Self-assembly and host-guest interaction of metallomacrocycles using fluorescent dipyrazole linker with dimetallic clips

Inorg Chem. 2010 Sep 6;49(17):7783-92. doi: 10.1021/ic100724r.

Abstract

By employing diimine ligands coordinated dimetallic clips ([(bpy)2Pd2(NO3)2](NO3)2 or [(phen)2Pd2(NO3)2](NO3)2, where bpy = 2,2′-bipyridine, phen = 1,10-phenanthroline) as the corner and anthracene-, naphthalene-, and benzene-based dipyrazolate dianions as the linker, a series of positively charged metallomacrocycles ([M4L2]4+ or [M8L4]8+) have been synthesized through a directed self-assembly method in aqueous solution. Every macrocycle has a cavity to bind solvent molecules or anions. The structures were characterized by elemental analysis, 1H and 13C NMR, electrospray ionization mass spectrometry, and single crystal X-ray diffraction analysis for compound 1 x 4 PF6(-) (1 = {[(bpy)Pd]4L(1)2}4+), 3 x 4 PF6(-) x 8 CH3CN x H2O (3 = {[(bpy)Pd]4L(2)2}4+), and 7 x 4 PF6(-) x 6 H2O (7 = {[(bpy)Pd]4L(5)2}4+). The 1:1 host-guest complexation for anthracene-based dipyrazolate-bridged macrocycles with aromatic guests was investigated via UV-vis and fluorescent titration.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 2,2'-Dipyridyl / chemical synthesis
  • 2,2'-Dipyridyl / chemistry
  • Anthracenes / chemical synthesis
  • Anthracenes / chemistry
  • Macrocyclic Compounds / chemical synthesis
  • Macrocyclic Compounds / chemistry*
  • Magnetic Resonance Spectroscopy
  • Models, Molecular
  • Naphthalenes / chemical synthesis
  • Naphthalenes / chemistry
  • Organometallic Compounds / chemical synthesis
  • Organometallic Compounds / chemistry*
  • Phenanthrolines / chemical synthesis
  • Phenanthrolines / chemistry
  • Pyrazoles / chemical synthesis
  • Pyrazoles / chemistry*
  • Spectrometry, Mass, Electrospray Ionization
  • X-Ray Diffraction

Substances

  • Anthracenes
  • Macrocyclic Compounds
  • Naphthalenes
  • Organometallic Compounds
  • Phenanthrolines
  • Pyrazoles
  • naphthalene
  • 2,2'-Dipyridyl
  • anthracene
  • 1,10-phenanthroline