Treatment of the ruthenium chloride, CpRu(PPh3)(2)Cl, with the alkynyldithiocarboxylate anions, RC CCS2-, in refluxing THF affords the chelate complexes CpRu(PPh3)(kappa S-2,S-S2CC CR) (1) (R = Bu' (a), Bu" (b), Ph (c), SiMe3 (d)) in high yield. The room temperature reaction of the solvated species, [CpRu(PPh3)(2)(NCPh)](+), with the alkynyldithiocarboxylate anions, RC CCS2-, produces the chelate complexes 1 and the mono-coordinated complexes CpRu(PPh3)(2)(kappa S-S2CC CR) (2). Complexes 2 are converted to 1 in solution so that they were characterized spectroscopically. (c) 2006 Elsevier B.V. All rights reserved.
Syntheses and molecular structures of group 8 benzonitrile complexes
摘要:
The molecular structures of eight nitrite complexes of general form [M(NCC6H4R-4)(L-2)Cp']PF6 [M = Fe, Ru; L-2 = dppe, (PPh3)(2); Cp' = Cp Cp*] are reported and discussed in terms of the nature of the M-N interaction. Data are consistent with a predominantly a-interaction, similar to that found in related acetylide complexes, with little evidence for metal to nitrite pi-back bonding interactions. (c) 2005 Elsevier B.V. All rights reserved.