821016-14-2Relevant academic research and scientific papers
Sulfur, tin and gold derivatives of 1-(2′-pyridyl)-ortho-carborane, 1-R-2-X-1,2-C2B10H10 (R = 2′-pyridyl, X = SH, SnMe3 or AuPPh3)
Batsanov, Andrei S.,Fox, Mark A.,Hibbert, Thomas G.,Howard, Judith A. K.,Kivekaes, Raikko,Laromaine, Anna,Sillanpaeae, Reijo,Vinas, Clara,Wade, Kenneth
, p. 3822 - 3828 (2004)
Reaction of the lithium salt of 1-(2′-pyridyl)-ortho-carborane, Li[1-R-1,2-C2B10H10] (R = 2′-NC 5H4), with sulfur, followed by hydrolysis, gave the mercapto-o-carborane, 1-R-2-SH-1,2-C2B10H10 which forms chiral crystals containing helical chains of molecules linked by intermolecular S-H ... N hydrogen bonds. The cage C(1)-C(2) and exo C(2)-S bond lengths (1.730(3) and 1.775(2) A, respectively) are indicative of exo S=C π bonding. The tin derivative 1-R-2-SnMe3-1,2-C 2B10H10, prepared from Li[1-R-1,2-C 2B10H10] and Me3SnCl, crystallises with no significant intermolecular interactions. The pyridyl group lies in the C(1)-C(2)-Sn plane, oriented to minimise the N ... Sn distance (2.861(3) A). The tin environment is distorted trigonal bipyramidal with axial N and Me. The gold derivative 1-R-2-AuPPh3-1,2-C2B 10H10, prepared from Li[1-R-1,2-C2B 10H10] and AuCl(PPh3), reveals no N ... Au interaction in its crystal structure.
