title: [Ni(R2pipdt)2](BF4)2 (R2pipdt = 1,4-disubstituted-piperazine-3,2-dithione) as useful precursors of mixed-ligand dithiolenes of interest for non-linear optics.
abstract: A simple method to obtain in high yields mixed-ligand nickel-dithiolene complexes, which show strong negative solvatochromism and negative first molecular hyperpolarizability, and the use of Raman spectroscopy to establish the extent of electronic delocalisation in these complexes, are reported.
authors.affiliation: Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, CSSD CNR, Parco Area delle Scienze 17A, I-43100 Parma, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Bigoli
authors.forename: C T
authors.initials: CT
authors.lastname: Chen
authors.forename: W C
authors.initials: WC
authors.lastname: Wu
authors.forename: P
authors.initials: P
authors.lastname: Deplano
authors.forename: M L
authors.initials: ML
authors.lastname: Mercuri
authors.forename: M A
authors.initials: MA
authors.lastname: Pellinghelli
authors.forename: L
authors.initials: L
authors.lastname: Pilia
authors.forename: G
authors.initials: G
authors.lastname: Pintus
authors.forename: A
authors.initials: A
authors.lastname: Serpe
authors.forename: E F
authors.initials: EF
authors.lastname: Trogu