S1 Bridging of Bipyridine Units by Phenylphosphine Links: Linear and Cyclic Oligomers and Some Acid Derivatives Raymond F. Ziessel, *a Loïc J. Charbonnière, *a Samir Mameri, a and Franck Camerel a Contribution from the Laboratoire de Chimie Moléculaire, UMR CNRS 7509, ECPM-ULP, 25 rue Becquerel, 67087 Strasbourg Cedex, France Supporting Information (16 pages) Table of Contents PAGE Detailed X-Ray crystal structure determination and crystal packing for 3 S2 Detailed X-Ray crystal structure determination and crystal packing for 19 S3 Detailed X-Ray crystal structure determination and crystal packing for 5 S5 Geometrical parameters for 3, 19 and 5 (Table S1). S7 Experimental details of compounds 3, 6 to 18 S8