Synthesis of C-substituted t-BuNH-8,9-R,R '-nido-7,8,9-C3B8H9 (R,R ' = H, H;MeH;Me,Me;Ph,H and Ph,Ph) tricarbollide compounds and their tautomeric conversions. Effect of substituents on tautomeric equilibria between neutral and zwitterionic forms

0356973 - ÚACH 2011 RIV GB eng J - Journal Article
Bakardjiev, Mario - Holub, Josef - Štíbr, Bohumil - Císařová, I.
Synthesis of C-substituted t-BuNH-8,9-R,R '-nido-7,8,9-C3B8H9 (R,R ' = H, H;MeH;Me,Me;Ph,H and Ph,Ph) tricarbollide compounds and their tautomeric conversions. Effect of substituents on tautomeric equilibria between neutral and zwitterionic forms.
Dalton Transactions. Roč. 39, č. 17 (2010), s. 4186-4190. ISSN 1477-9226. E-ISSN 1477-9234
R&D Projects: GA MŠMT LC523
Institutional research plan: CEZ:AV0Z40320502
Keywords : magnetic-resonance-spectroscopy * derivatives * series
Subject RIV: CA - Inorganic Chemistry
Impact factor: 3.647, year: 2010

The tautomeric behaviour of individual compounds is therefore strongly affected by the nature of the substituent, as assessed via NMR spectroscopy in terms of tautomerisation constants K-T = C-Z2/C-N2 (where C-Z2 and C-N2 are equilibrium concentrations of Z2 and N2 forms in a given solvent). Individual tautomers were characterised by B-11 and H-1 NMR spectroscopy and the structure of the monomethylated N2b tautomer was determined by an X-ray diffraction study.
Permanent Link: http://hdl.handle.net/11104/0195352