Self-assembly of [Pt(3n)(CO)(6n)]2- (n = 4-8) carbonyl clusters: from molecules to conducting molecular metal wires.
A comprehensive study discussing the different parameters that influence the self-assembly of [Pt(3n)(CO)(6n)](2-) (n = 4-8) clusters with miscellaneous mono- and dications into 0-D, 1-D, 2-D, and 3-D materials is herein reported. As an unexpected bonus, the use of Ru(II) dications allowed the first structural characterization of the previously unknown [Pt(21)(CO)(42)](2-) dianion. 0-D structures, which contain isolated ions, are electrical insulators in solid form. Conversely, as soon as infinite chains of clusters are formed, the electrical resistivity, measured in pressed pellets, decreases to 10(5)-10(6), 10(4), and 10(2) ohms cm for discontinuous, semicontinuous, and continuous chains, respectively. Therefore, the resemblance of these materials to molecular metal wires is not only morphological but also functional. Preliminary results of possible self-assembly phenomena in a solution of [Pt(15)(CO)(30)](2-) and [Pt(18)(CO)(36)](2-) according to dynamic light scattering experiments are also reported.
Dipartimento di Chimica Fisica e Inorganica, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy.
Cristina
C
Femoni
Maria Carmela
MC
Iapalucci
Giuliano
G
Longoni
Tatiana
T
Lovato
Stefano
S
Stagni
Stefano
S
Zacchini
D002248:Carbon Monoxide / Q000737:chemistry; D018360:Crystallography, X-Ray; D008027:Light; D036103:Nanotechnology / Q000379:methods*; D053770:Nanowires / Q000737:chemistry*; D017671:Platinum Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D012542:Scattering, Radiation
D017671:Platinum Compounds; D002248:Carbon Monoxide