The Discoveries at Samaria

Discoveries at Risk

From the Workshop of Discoveries From the Workshop of Discoveries

New discoveries at the interface of boron and carbon chemistries*

The continued growth of polyhedral borane chemistry is illustrated by the successful synthesis of [closo-B12(OH)12] 2– by the H2O2 oxidation of [closo-B12H12] 2–. The hydroxylated species reacts with common organic reagents to produce 12-fold degenerately substituted carboxylate esters, ethers, and carbamate esters. The ether derivatives undergo facile and reversible redox reactions in which th...

Monument to the discoveries.

A week ago I was standing with my wife by the River Tagus in Lisbon, next to the Monument to the Discoveries. The monument is at the spot where Vasco da Gama set out to discover the southeast passage from Europe to Asia, past the Cape of Good Hope. Vasco’s discovery marked the beginning of the Portuguese maritime empire. At the furthest tip of Europe, Portugal was perfectly situated to found su...

The Discoveries of Continuations

We give a brief account of the discoveries of continuations and related concepts by A. van Wijngaarden, A. W. Mazurkiewicz, F. L. Morris, C. P. Wadsworth, J. H. Morris, M. J. Fischer, and S. K. Abdali. In the early history of continuations, basic concepts were independently discovered an extraordinary number of times. This was due less to poor communication among computer scientists than to the...