STRUCTURE INVESTIGATIONS OF RUTHENIUM-MANGANESE POLYPYRIDYL COMPLEXES. K. Lashgari, T.Norrby*, R. Norrestam, B. Åkermark* Dept. of Structural Chemistry, Stockholm University, 106 91 Stockholm, Sweden. *Dept. of Organic Chemistry, Royal Institute of Technology, Stockholm, Sweden.

Syntheses and structure determinations by single crystal X-ray diffraction techniques have been / is presently performed for: 1 [Ru-bis(dipyridyl-6-carboxylate)], 2[Ru-bis(dipyridyl)(dipyridyl-6-yl-acetic acid)PF₆], 3[Ru-(terpyridyl)(dipyridyl-6-carboxylate)Cl_x](x=1-2) 4[Ru-bis(dipyridyl)(picolinic acid)]PF₆, 5[Ru-Mn complex] 4PF₆, 6[Ru-Mn complex] 4PF₆.

These investigations are part of a project focused on studies of artificial photosynthesis reactions [1,2]. Experiments performed comprehend the syntheses, structural characterisations by single crystal X-ray diffraction and NMR, UV-vis. techniques [3].

The more recent studies include i.a. investigation of new types of Ru-Mnpolypyridine complexes with possible applications in artificial photonelectron transfer reactions.

[1] Balzani,V.,et.al., Ru(II)polypyridine complexes, Coor. Chem. Rev. 84 (1988) 85-277

[2] Meyer,T.J., Chem. Appr. to Artificial Photosynthesis, Acc. Chem.Res., 22 (1989)163

[3] L. Hammarstöm et.al. To be published in Journal of Organometallics.