76846-04-3Relevant articles and documents
Synthesis, Structure, and Reactions of , Containing a Potentially Useful New Anion for Crystallizations
Giandomenico, Christen M.,Dewan, John C.,Lippard, Stephen J.
, p. 1407 - 1412 (1981)
Stannous chloride reacts with yellow chlorohexakis(tert-butyl isocyanide)molybdenum(II) chloride to give the maroon complex +, in which insertion of tin into the Mo-Cl bond has formally occurred.Crystals suitable for X-ray analysis were obtained by using the BBCN anion, -, which may be viewed as an analogue of the PPN cation, +.The seven-coordinate complex has crystallographically required CS symmetry.Its geometry may be described as that of a CS 4:3 piano stool or as that of a distorted capped octahedron with SnCl3- as the capping ligand.The Mo-Sn bond length is 2.663(1) Angstroem, and the Mo-C distances vary from 2.071(18) to 2.138(8) Angstroem.The CN group in the anion is disordered across a center of symmetry in the crystal lattice and has a bond length of 1.147(12) Angstroem.The sodium and tetramethylammonium salt of the BBCN anion have been synthesized.The compound crystallizes in the orthorhombic system, space group Pbcm, with a = 11.968(7) Angstroem, b = 23.012(6) Angstroem, c = 26.905(4) Angstroem, and Z = 4.Reaction of + with zinc on aqueous ethanol does not lead to reductive coupling of adjacent tert-butyl isocyanide ligands to form a coordinated N,N'-dialkyldiaminoacetylene, as in the reaction of zinc with other + complexes.Instead, the 2+ cation has been isolated from the reaction mixture as the tetraphenylborate salt.
