97695-91-5Relevant academic research and scientific papers
Carbaborane Derivatives of the Late- and Post-transition Elements. Part 3. Structural Consequences of Ligand Substitution in Palladadicarbadodecaboranes 3-L2-3,1,2-PdC2B9H11. The Crystal and Molecular Structures of 3-2N(CH2)2NMe2>-3,1,2-PdC2B9H11 and 3-(PMe3)
Colquhoun, Howard M.,Greenhough, Trevor J.,Wallbridge, Malcolm G. H.
, p. 761 - 770 (2007/10/02)
The action of Tl+2B9H11>- on 2(tmen)> 2N(CH2)2NMe2> yields the aminometallacarbaborane 3-(tmen)-3,1,2-PdC2B9H11 (1) which possesses a 'slipped' structure, as shown by a single-crystal X-ray study a=8.4745(12), b=12.3636(19), c=16.7759(26) Angstroem, β=109.14(1) deg, R=0.03 for 2070 independent observed reflections>.The diamine ligand may be displaced from complex (1) by cyclo-octa-1,5-diene, in the presence of HCl, and by trimethylphosphine, which in turn is displaced by trimethyl phosphite yielding the complexes 3-L2-3,1,2-PdC2B9H11 (L2=1,5-C8H12, (PMe3)2 (2), or 3>2).The 11B n.m.r. spectra are consistent with a more symmetrical structure for complex (2) than for (1) and this has been confirmed by an X-ray study which shows Pd-B 2.260(5), 2.315(5), and 2.249(4) Angstroem, and Pd-C 2.414(4) and 2.492(4) Angstroem; a=6.7183(10), b=15.5024(18), c=17.9184(24), β=101.90(1) deg, R=0.026 for 2214 independent observed reflections.
