Heme–Cu Binucleating Ligand Supports Heme/O2and FeII–CuI/O2Reactivity Providing High- and Low-Spin FeIII–Peroxo–CuIIComplexes

Cofacial dicobalt complex of a binucleating hexacarboxamide cryptand ligand.

A hexacarboxamide cryptand featuring appended polyether moieties is used as a binucleating ligand for two Co(II) centers, marking the first time cryptands have been used as hexaanionic N donors for metal coordination. A synthesis for the hexacarboxamide cryptand, culminating in a 23% yield high-dilution step and proceeding in 8% overall yield, is reported. The ligand is metalated using cobalt(I...

Superstructures at low spin - high spin transitions

In many transition metal compounds, in particular those containing Fe and Co, there occur spin-state transitions between low-spin and high-spin (or intermediate-spin) states. We show that typical interactions between similar spin-state ions are short-range repulsion, and long-range interaction which can have a different sign depending on the elastic anisotropy of the lattice and on the directio...

Energy-level diagrams of high-spin and low-spin molecules

MicroISPs: providing convenient and low-cost high-bandwidth Internet access

We present ISP, a novel architecture for Internet Service Providers suitable for installation in airports, hotels, conference centers, cafés, and office or apartment buildings. Users access a ISP via a low-cost, high-bandwidth LAN, e.g. Ethernet or WaveLAN. A router connects the ISP’s LAN to a shared high-bandwidth access link (e.g., DSL or cable) to a conventional ISP. For this service, a ISP ...

ISPs: Providing Convenient and Low-Cost High-Bandwidth Internet Access

We present ISP, a novel architecture for Internet Service Providers suitable for installation in airports, hotels, conference centers, cafés, and office or apartment buildings. Users access a ISP via a low-cost, high-bandwidth LAN, e.g. Ethernet or WaveLAN. A router connects the ISP’s LAN to a shared high-bandwidth access link (e.g., DSL or cable) to a conventional ISP. For this service, a ISP ...