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Nine-membered 1,4,7-triphospha- and triarsamacrocycles with unsaturated benzo-backbones have been prepared using the [Cp(R)Fe](+) unit as a template. The cyclisation involves the attack of a coordinated phosphide (or arsenide) nucleophile at an activated, electrophilic ortho-fluorophenyl substituent on a neighbouring pnictide donor. The macrocycle assembly… (More)
Aimed at graphics systems, this 32-bit processor's large address reach, bi t-f ield processing, and DRAM interface make it suitable for many other em bedded processing applications. he TMS34010 is a high-performance 32-bit microprocessor with special instructions and hardware for handling the bit-field data and address manipulations often associated with… (More)
A 9-membered triphosphorus macrocycle with o-phenylene backbone functions has been stereoselectively prepared on a CpFe(+) template by two successive nucleophilic attacks of coordinated phosphide on a coordinated o-fluorophenylbiphosphine.
The reaction of bis(trifluoromethyl)arsane 2 with secondary amines R2NH in a molar ratio of 1:3 at -6 0 °C allows the preparation of trifluoromethyl arsaalkenes of the type F3CAs=C(F)NR2 in moderate yields (15-35% ) [NR2 = NM e2 (3a), NM eEt (3b), N Et2 (3c)]. The main product of the reaction of 2 with Me2NH is the 1,1-diamino compound F3CAs=C(NM e2)2 (4a).… (More)