Zwitterionic compounds of the 8,8'-X(C2B9H10)2Co series with monoatomic O, S, Se, Te, N bridges between carborane ligands

Cobalt Bis(dicarbollides)(1–) Covalently Attached to the Calix[4]arene Platform: The First Combination of Organic Bowl‐Shaped Matrices and Inorganic Metallaborane Cluster Anions

“…-1,2-C 2 B 9 H 10 )-(1Ј,2Ј-C 2 B 9 H 11 )-3,3Ј-Co] [36] (2) and [8,8Ј-μ-H 2 NϽ(1,2-C 2 B 9 H 10 ) 2 -3,3Ј-Co]) [40] (8) were prepared at the Institute of Inorganic Chemistry of the Academy of Sciences of the Czech Republic (I.I.C.) according to the described original procedures.…”

“…The other peaks are almost unaffected by the substitution and exhibit a pseudosymmetric pattern that is typical for the parent amino derivative and its simpler derivatives. [40] The main difference observed in the 11 B NMR spectra of di-and mono-substituted derivatives 9 and 10 is a considerable peak broadening in the spectrum of 9, apparently due to averaging of slightly different signals of two boron cages attached in a more rigid manner than in the previous series. The 1 H and 13 C NMR spectra of compounds 3-6 reflect the symmetry of their particular substitution pattern.…”

“…[39] The 1,3-dichloride C was treated with the bridged amino derivative [8,8Ј-H 2 NϽ(1,2-C 2 B 9 H 10 ) 2 -3,3Ј-Co] [40] (8) after activation with HBPU (see Scheme 3).…”

Chemistry of cobalt bis(1,2-dicarbollide) ion; the synthesis of carbon substituted alkylamino derivatives from hydroxyalkyl derivatives via methylsulfonyl or p -toluenesulfonyl esters

“…Selection of available building blocks with amino functions located in a close distance from the cage seems rather limited, consisting in B-substituted cobalt bis(dicarbollide) with methylene ammonium groups available from a cleavable diatomic bridge [27] or boron substituted B(8)-NH 3 [28] or B (8,8 0 ) > NH 2 bridged derivative [1,29]. More flexible solutions would be most readily accessible via direct carbon substitutions.…”

Synthesis of new polymers involving deltahedral carborane units

“…VI: d z (assignment) (relative intensity in %); 480 (M' ) (100); 409(8); 392 (14); 374(22); 348 (49); 331(16) and other fragments. The ionized molecules of VI are more stable than the mother molecules I11 and provide an expected distribution of molecular weights: 474 (2); 475 (6); 476(17); 477 (36); 478 (65); 479 (92); 480 (100); 481 (78); 482 (42); 483 (12); 484 (2).…”