Breaking Infinite Cu^I Carboxylate Helix Held by Cuprophilicity into Discrete Cu_n Fragments (n = 6, 4, 2) (Eur. J. Inorg. Chem. 2/2008)

Abstract

The cover picture shows the cleavage of an infinite copper(I) helix into discrete Cun fragments of decreasing nuclearity (n = 6, 4, 2) as a result of the increase in temperature of the gas‐phase reactions with polyarenes. Details are discussed in the article by Y. Sevryugina and M. A. Petrukhina on p. 219 ff.

Reactions of 1,1′‐Diphosphaferrocene with CuCl and CuBr Resulting in Cu4P4X4Fe2 (X = Cl, Br) Complexes with Adamantane‐like Topologies

“…2.80 Å. There is an ongoing discussion about the relevance and nature of Cu I ···Cu I "cuprophilic" interactions [27,28] and many examples where such interactions were invoked to explain short Cu I ···Cu I contacts were reported [29][30][31][32][33]. There are, however, also other examples of even shorter structure-imposed Cu I ···Cu I contacts in the probable absence of such interactions [15].…”

Crystal Growth, Dynamic and Charge Transfer Properties of New Coronene Charge Transfer Complexes

“…14 the dynamic motion, in many co-crystals, the coronene molecule exhibits static positional disorder. 16,17 Our study is an attempt to acquire the control over the behavior of coronene in mixed crystals and to study the complex formation process in solution. This is illustrated using two new crystalline charge transfer complexes (Scheme 1) incorporating coronene and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F 4 -TCNQ) components, exhibiting drastically different behavior of the coronene molecules.…”

Do Short C–H–M (M = Cu(I), Ag(I)) Distances Represent Agostic Interactions in Pincer-Type Complexes? Unusual NHC Transmetalation from Cu(I) to Ag(I)

“…Structurally characterized molecules containing a subunit of type (a) include those involving nonassisted, short metal–arene interactions with, for example, solvent molecules ((b) in Scheme ) ,− and those where an arene C–H bond is brought in close proximity to the metal center owing to the chelate effect of an additional donor function ((c) in Scheme c). − 3c–2e M–C–H interactions are generally considered to be attractive and to be responsible, at least to some extent, for the structure adopted by the complex. The proximity between the metal and the C–H bond may lower the activation energy of a subsequent C–H bond-breaking step with formation of a covalent C–M bond, as observed for example in pincer-type complexes ((d) in Scheme d).…”