Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Thomas Onak"'
A broad coverage of boron topics is provided. Structural elucidations and convenient routes to useful hydroboration reagents are presented as well as boron compounds used for medical purposes. Special attention is devoted to theoretical studies and c
The 3rd supplement continues the updating of the original 20 volumes on boron compounds published between 1974 and 1979. The first supplement consisting of 3 volumes covered all the literature uniformly up to the end of 1977, whereas the two volumes
Publikováno v:
Inorganica Chimica Acta. 289:11-19
Regioselective deuterated nido -[C 2 B 9 H 12 ] − ions were obtained from a fluoride ion promoted debor reaction of deuterated closo -1, X -C 2 B 10 H 12 ( X =2, 7) cage compounds. The position(s) of the deuterium atom(s) in the product, as determi
Publikováno v:
Journal of the American Chemical Society. 121:2850-2856
An extensive study is presented of nuclear spin−spin coupling constants in 25 polyhedral boranes using density functional theory/finite perturbation theory (DFT/FPT) methods to determine the Fermi contact term. Scalar couplings were obtained at eit
Publikováno v:
Heteroatom Chemistry. 9:95-102
Autor:
Jojo Jaballas, Thomas Onak
Publikováno v:
Journal of Organometallic Chemistry. 550:101-109
The results of IGLO/NMR and GIAO/NMR calculations on the known closo-hexaborate ions [R–XB 5 H 5 ] 2− and their protonated counterparts [R–XB 5 H 6 ] − (R=H, CH 3 , CN, Cl; X=B. R=H, CH 3 ; X=C) are correlated with experimental data. A consid
Publikováno v:
Main Group Metal Chemistry, Vol 19, Iss 1, Pp 1-8 (1996)
Publikováno v:
Journal of the American Chemical Society. 118:4405-4410
The measured 13C chemical shifts of over forty carborane compounds correlate very well with ab-initio/IGLO/NMR calculated values at both the DZ//3-21G and DZ//6-31G* (IGLO-NMR//Gaussian-geometry-optimized) levels of theory as well as with the ab-init
Publikováno v:
Inorganic Chemistry. 35:4536-4540
Strong evidence for the low-temperature formation of an axially positioned NR3 (R = H, CH3) adduct of an “open” cage C2B7H9 structure is obtained via comparison of the experimentally obtained 13C and 11B NMR data (R = CH3) with that obtained from