107875-90-1Relevant academic research and scientific papers
Synthesis, Reactions, and Nuclear Magnetic Resonance Studies of Some Substituted arachno-Decaborane and arachno-Nonaborane Derivatives, and the Isolation of Novel Polyhedral Diplatinaboranes. Crystal and Molecular Structure of 3-B2H5)(η3-B6H9)>
Ahmad, Rohana,Crook, Janet E.,Greenwood, Norman N.,Kennedy, John D.
, p. 2433 - 2442 (1986)
Reaction of nido-2-XB10H13 (X=Cl, Br, or I) with SMe2 afforded almost quantitative yields of arachno-2-X-6,9-(SMe2)2-B10H11 which, when heated under reflux with ROH (R=Me or Et), gave moderate yields of arachno-1-X-4-(SMe2)-B9H12 together with the corresponding arachno-4-(SMe2)-7-(OR)-B9H12.Deprotonation of 1-Cl-4-(SMe2)-B9H12 followed by reaction with cis- gave .Similar treatment of 4-(SMe2)-7-(OMe)-B9H12 gave the corresponding compound together with variable (small) yields of the known and , the novel, yellow, air-stable crystalline compound , and a new, green, air-stable compound tentatively formulated as .Single-crystal X-ray diffraction studies on , together with its n.m.r. properties, revealed a novel cluster geometry in which the central almost-linear P-Pt-Pt-P unit is co-ordinated by an η3-B6H9 nido-subcluster and an opposing η3-B2H5 moiety.The crystals are monoclinic, space group P21, with a=1618.3(9), b=1330.0(7), c=592.3(3) pm, β=93.62(4)o, and Z=2.Detailed (1)H, (11)B, and (31)P n.m.r. studies of the various halogen- and alkoxy-substituted platinaboranes are presented, and the mechanistic implications of the observed positions of substitution in the products are discussed.
