Dicarba-closo-dodecaborane(12) derivatives of phosphonium salts: easy formation of nido-carborane phosphonium zwitterions.
نویسندگان
چکیده
The first examples of arylphosphonium salts containing a dicarba-closo-dodecaborane(12) (closo-carborane) are reported; in contrast to the 1,12-carborane derivative, the 1,2- and 1,7-isomers undergo a facile deboronation reaction in polar solvents to afford the corresponding nido-carborane phosphonium zwitterions.
منابع مشابه
Some Recent Advances in the Chemistry of Dicarba-clos O-dodeca- Boranes(12), B1 0h1 0c 2rr'
Experimental data on the mutual rearrangements of isomeric dicarba-closododecaboranes(12) and their B-halogen derivatives are reviewed. Reactions involving electron transfer to dicarba-closo-dodecaboranes(12), and the properties of the resulting dodecahydrodicarba-nido-dodecaborates(2 —) as intermediates of the rearrangements of 1.7and 1,12-dicarba-closo-dodecaboranes(12) are discussed. Attenti...
متن کاملNovel iodinated carboranes: synthesis of the 8-iodo-7,9-dicarba-nido-undecaborate anion and 2-iodo-1,7-dicarba-closo-dodecaborane.
Electrophilic iodination of the 7,9-dicarba-nido-undecaborate anion with molecular iodine in the presence of AlCl3 generated a new carborane anion-8-iodo-7,9-dicarba-nido-undecaborate-in excellent yield. The capping of the new anion with HBCl2 yielded a previously unknown neutral iodinated carborane, 2-iodo-1,7-dicarba-closo-dodecaborane.
متن کاملSynthesis of stable platinum complexes containing carborane in a carrier group for potential BNCT agents.
A series of stable platinum complexes containing closo-carborane cages in a 'carrier group', which could be potentially utilized for boron neutron capture therapy (BNCT), was successfully synthesized and characterized by various spectroscopic methods. Two ortho-closo-carborane cages were connected to the 3,3' or 4,4'-positions of 2,2'-bipyridine through ester bonds to give three carborane-linke...
متن کاملSynthesis of closo- and nido-biscarboranes with rigid unsaturated linkers as precursors to linear metallacarborane-based molecular rods.
Several biscarborane-type derivatives of 8-iodo-1,2-dicarba-closo-dodecaborane (1), suitable as the precursors of linear metallacarborane-based molecular rods, were prepared. The synthesized closo-compounds contained two carborane moieties connected through a rigid linear unsaturated linker. The linkers were based on ethynylene and para-phenylene fragments and their combinations. The deboronati...
متن کاملSynthesis and anti-cancer activity of dinuclear platinum(II) complexes containing bis(thioalkyl)dicarba-closo-dodecaborane(12) ligands.
A series of novel, dinuclear (2,2':6',2''-terpyridine)platinum(ii) complexes containing bis(thioalkyl)-dicarba-closo-dodecaborane(12)(carborane) ligands were prepared and characterised, and their preliminary anti-cancer characteristics have been determined in vitro; the complexes are the first examples of bis-intercalator complexes containing a boron-rich carborane cage.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Dalton transactions
دوره 20 شماره
صفحات -
تاریخ انتشار 2007