title: Synthesis and characterization of a "Pt3Tl" cluster containing an unprecedented trigonal environment for thallium(I).
abstract: The tetranuclear [{Pt(CNC)(tht)}3Tl](PF6) (tht = tetrahydrothiophene; SC4H8; CNC = C,N,C-2,6-NC5H3(C6H4-2)2; 2) cluster has been prepared by the reaction of [Pt(CNC)(tht)] (1) and TlPF6 (molar ratio 3:1) and structurally characterized. The Tl(I) atom is bonded to three Pt(II) centers bearing a perfect trigonal coordination. The Pt(II)-Tl(I) bonds are unsupported by any bridging ligand and are the shortest of this kind reported so far [2.9086(5) Å]. These intermetallic bonds persist in a CD2Cl2 solution, as shown by the (195)Pt{(1)H} NMR spectrum of 2 at 193 K, in which a Pt-Tl coupling of 8.9 kHz is observed.
authors.affiliation: Instituto de Síntesis Química y Catálisis Homogénea, Departamento de Química Inorgánica-ISQCH, Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain.
authors.forename: Úrsula
authors.initials: Ú
authors.lastname: Belío
authors.forename: Sara
authors.initials: S
authors.lastname: Fuertes
authors.forename: Antonio
authors.initials: A
authors.lastname: Martín
mesh_terms: D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D013793:Thallium / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D010984:Platinum; D013793:Thallium