title: Origin of Ferromagnetism in Cyano-Bridged Compounds Containing d(1) Octacyanometallates Financial support by the Belgian National Science Foundation and Flemish Government under the Concerted Action Scheme, the ESF programme on molecular magnets, the Russian Foundation for Basic Research (Grant No. 01-02-32210), and the INTAS Grant 00-00565 are gratefully acknowledged. The authors thank Professor Silvio Decurtins and the members of his group for stimulating discussions and for sending us the structural data on the niobium compound prior the publication, and Dr. Høgni Weihe for useful discussions. We also thank Ken Somers for the help with the Figures.
authors.affiliation: Department of Chemistry Katholieke Universiteit Leuven Celestijnenlaan 200F, 3001 Leuven (Belgium).
authors.forename: Liviu F.
authors.initials: LF
authors.lastname: Chibotaru
authors.forename: Vladimir S.
authors.initials: VS
authors.lastname: Mironov
authors.forename: Arnout
authors.initials: A
authors.lastname: Ceulemans