Kazuko Matsumoto
Feb 1, 1985
Citations
0
Influential Citations
13
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
Nonstoichiometric platinum tetranuclear compound, cis-Diammineplatinum α-Pyrrolidone Violet, [Pt4(NH3)8(C4H6NO)4)(PF6)2(NO3)2.56·5H2O, has been synthesized and the crystal structure has been solved with X-ray diffraction analysis. The crystal is triclinic with the space group of P\bar1 and cell dimensions of a=13.530(8), b=19.242(9), c=10.222(3) A, α=96.56(9), β=93.82(9), γ=74.64(8)°, V=2547.4 A3, and Z=2. The structure have been solved by heavy atom method and the final discrepancy index R1 was 0.094 and R2 was 0.090. The cation is structurally identical with those of cis-Diammineplatinum α-Pyridone Yellow(PPY), [Pt4(NH3)8(C5H4NO)4]4+, cis-Diammineplatinum α-Pyridone Blue(PPB), [Pt4(NH3)8((C5H4NO)4]5+, and cis-Diammineplatinum α-Pyrrolidone Tan(PPT), [Pt4(NH3)8(C4H6NO)4]6+, and consists of four platinum atoms linked in a chain with bridging pyrrolidone ligands. Each platinum atom is cis coordinated by two ammine ligands and either two exocyclic oxygen atoms or two deprotonated ring nitrogen atoms of α-py...