Alternative syntheses and X-ray diffraction analyses of the parent tricarbaborane compounds [nido-7,8,9-C(3)B(8)H(11)](-), [nido-7,8,10-C(3)B(8)H(11)](-) and [1-(eta(5)-C(5)H(5))-closo-1,2,4,10-FeC(3)B(8)H(11)]

0366250 - ÚACH 2012 RIV CH eng J - Článek v odborném periodiku
Holub, Josef - Růžička, A. - Padělková, Z. - Štíbr, Bohumil
Alternative syntheses and X-ray diffraction analyses of the parent tricarbaborane compounds [nido-7,8,9-C(3)B(8)H(11)](-), [nido-7,8,10-C(3)B(8)H(11)](-) and [1-(eta(5)-C(5)H(5))-closo-1,2,4,10-FeC(3)B(8)H(11)].
Journal of Organometallic Chemistry. Roč. 696, č. 14 (2011), s. 2742-2745. ISSN 0022-328X. E-ISSN 1872-8561
Grant CEP: GA MŠMT LC523; GA ČR(CZ) GAP207/11/0705
Výzkumný záměr: CEZ:AV0Z40320502
Klíčová slova: carboranes * crystallography * iron complexes * metallacarboranes * tricarbaboranes * tricarbollides
Kód oboru RIV: CA - Anorganická chemie
Impakt faktor: 2.384, rok: 2011

Reaction of the neutral tricarbaborane nido-7,8,9-C(3)B(8)H(12) (1) with triethylamine in CH(2)Cl(2) led to quantitative deprotonation and isolation of the corresponding Et(3)NH(+) salt of the [nido-7,8,9-C(3)B(8)H(11)](-) anion (2). This was converted into PSH(+) and Me(4)N(+) salts via metathetic cation exchange. Heating of the solid Me(4)N(+)[7,8,9-C(3)B(8)H(11)](-) in mineral oil at 350 degrees C for 2 h resulted in thermal rearrangement and isolation of the cage isomeric compound Me(4)N(+)[7,8,10-C(3)B(8)H(11)](-). Finally, compound 1 was directly complexed via reaction with [CpFe(CO)(2)](2) (Cp = eta(5)-C(5)H(5)) to generate the ferratricarbollide sandwich [1-Cp-closo-1,2,4, 10-FeC(3)B(8)H(11)] (4) in 60% yield. The structures of all the generic compounds of tricarbollide chemistry, 1 (PSH(+) salt), 2 (MePPh(3)(+)salt), and 4, were established unambiguously by an X-ray diffraction analysis.
Trvalý link: http://hdl.handle.net/11104/0201303