A ring $ R $, possibly with no identity, is called an ${I_0} $-ring if each one-sided ideal not
contained in the Jacobson radical $ J (R) $ contains a nonzero idempotent. If, in addition, …

… B i N i 3R structures are built from two B i N i rings linked together by a B 2 N 2 ring. It has
been … Similarly, notice that for all even-i rings the antiaromaticity increases compared with their …

… These are in contrast to the much smaller, smooth H i rings (diameter ∼25 kpc) with regular
… Using numerical simulations, we first demonstrate that intragroup H i rings or arcs can be …

We report the synthesis and solution- and solid-state characterization of gold(I) rings with
short 1,9-transannular Au···Au interactions. The 9- and 16-membered gold(I) rings were …

The digold(I) diacetylides [4-RC 6 H 9 (4-C 6 H 4 OCH 2 C⋮CAu) 2 ], which contain a
cyclohexylidene hinge group 4-RC 6 H 9 with R = H or t-Bu, react with diphosphine ligands Ph 2 …

In a recent paper [10], 1 gave an account of definitions of’reflexive’and’quadratic’forms in a
fairly general situation, both generalising the classical notion of hermitian forms. In this paper …

… that I-rings contain what today is occasionally called a Kothe-radical, ie, a unique maximal
bilateral ideal, which contains all left and right nil-ideals of the ring in question. I-rings appear …

The reaction of the digold(I) diacetylide [(AuCCCH 2 OC 6 H 4 ) 2 CMe 2 ] with diphosphane
ligands can lead to formation of either macrocyclic ring complexes or [2]catenanes by self‐…

The selectivity of formation of organometallic rings or [2]catenanes [{X(4-C 6 H 4 OCH 2 C⋮CAu)
2 (μ-Ph 2 PZPPh 2 )} n ], n =1 or 2, respectively, has been studied as a function of the …

Free energies of activation, ΔG‡, for ring inversion are reported for a number of heterocycles.
These values are obtained from coalescence temperatures observed for 1H nmr spectra. …