350014-32-3

Upstream product

• 87518-61-4 2,9-bis-(chloromethyl)-1,10-phenanthroline 
• 2150-02-9 bis(2-mercaptoethyl)ether 

Relevant academic research and scientific papers

Conformationally locked pentadentate macrocycles containing the 1,10-phenanthroline unit. Synthesis and crystal structure of 5-oxa-2,8-dithia[9](2,9)-1,10-phenanthrolinophane (L) and its coordination properties to NiII, PdII, PtII, RhIII and RuII

The complexation of the new mixed thia-aza-oxa macrocycle 5-oxa-2,8-dithia[9](2,9)-1,10-phenanthrolinophane (L) containing the 1,10-phenanthroline unit with NiII, PdII, PtII, RhIII and RuII has been investigated. The results have been compared with those obtained with the structurally related ligand 2,5,8-trithia[9](2,9)-1,10-phenanthrolino-phane (L′). The most stable conformations of both ligands have been calculated in order to understand their change upon metal complexation and for L good agreement has been found with the conformations observed in the crystal structure of L·1/2H2O. The single-crystal structures of [Ni(L)Cl]BF4 and [Ru(L)(PPh3)][PF6]2·1/4MeCN reveal a N2S2O coordination sphere about NiII and RuII, with the macrocyclic ligand in a folded conformation and with the sixth coordination site taken up by Cl- or PPh3, respectively. For [Pd(L)][BF4]2 an [N2S2 + O] coordination is observed, with the O-donor interacting weakly with the metal centre at the apical position of a square-based coordination sphere. 13C and 1H NMR spectroscopic studies indicate that the complexes are not fluxional in solution, with the ligand imposing the same coordination sphere as observed in the solid state. 13C NMR spectroscopy has also helped in elucidating the stereochemistry of [Rh(L)Cl2]BF4 for which no suitable crystals could be grown: the two Cl- ligands are mutually trans with the N2S2 donor set of the macrocyclic ligand occupying the equatorial positions of an octahedral coordination sphere and with the O-donor atom left un-coordinated. The redox properties of all the complexes in MeCN have been studied.

Re(i) derivatives functionalised with thioether crowns containing the 1,10-phenanthroline subunit as a new class of chemosensors

A series of luminescent fac-[Re(CO)3(L)(NN)]+ complexes, where L is a pyridine or an imidazole and NN is the 1,10-phenanthroline subunit of mixed donor pentadentate thioether crowns have been synthesised and their luminescence properties have been analysed. Then, heterometallic Re(i)/Au(i) complexes, with the Au(i) fragment bonded directly to the imidazole ligand, and heterometallic Re(i)/Ag(i) complexes, with the silver fragment coordinating the S-donor thioether linker of the rings have also been prepared. Analysis of their luminescence properties showed a considerable blue shift of the emission maxima for the Re(i)/Ag(i) derivatives, upon coordination of the silver centre to the S-donor atoms of the aliphatic chain of the macrocyclic units.