The first grubbs-type metathesis catalyst with cis stereochemistry: synthesis of (([eta]2-dtbpm)Cl2Ru=CH-CH ̳CMe2) from a novel, coordinatively unsaturated dinuclear ruthenium dihydride - Hansen, Sven Michael; Rominger, Frank; Metz, Markus; Hofmann, Peter (Chemistry - a European journal, 1999)