cross-coupling

cross-coupling

[¦krȯs ′kəp·liŋ]
(communications)
A measure of the undesired power transferred from one channel to another in a transmission medium.
References in periodicals archive ?
Multiferroics are materials that display spontaneous ferroelectric and magnetic ordering at the same time, while the cross-coupling between the magnetism and ferroelectricity in multiferroics represents the core issue of the physics of multiferroics.
The [m.sub.11], [m.sub.22], and [m.sub.12]=[m.sub.21] physically represent the effective input inertia, effective output inertia, and cross-coupling inertia:
Integrated cross-coupling bearing unit Courtesy of IMV
These cross-coupling effects are known as the Alford effect [4] and can occur in all gas turbines and high pressure compressors.
Bearings were considered isotropic ([k.sub.xx] = [k.sub.yy] = k and [c.sub.xx] = [c.sub.yy] = c), with negligible cross-coupling effects ([k.sub.xy] = [k.sub.yx] = 0 and [c.sub.xy] = [c.sub.yx] = 0).
Palladium mediated cross-coupling reactions constitute one of the main synthetic tools for creation of new carbon-carbon bonds [1, 2].
Grignard Reagents and Transition Metal Catalysts: Formation of C-C Bonds by Cross-Coupling
Over the past decade, as a member of York University's Department of Chemistry, Organ and his team developed one of the world's most widely used systems for palladium-mediated cross-coupling, pyridine-enhanced precatalyst preparation stabilization and initiation (PEPPSI) and explored the concept of using microwaves to promote capillary flow for organic synthesis.
Heck's discoveries laid the foundation for all modern cross-coupling reactions.
In the 1950's and 60's, research on single phase materials proved both the existence of ME materials [1] and that single crystal materials are inadequate for most engineering applications, since the cross-coupling effect was generally too weak to be of practical value [2,3].
These breakthroughs include (i) realization that Me-branched chiral compounds can be synthesized by ZACA reaction via a few alternate and mutually complementary routes (Scheme 5), (ii) unexpected finding that 2,4-dimethyl-1-hydroxybutyl moieties can be readily purified by ordinary chromatography (Scheme 6), (83) and (iii) subsequent Pd- or Cu-catalyzed cross-coupling proceeds with essentially full (>99%) retention of newly formed chiral centers (Scheme 7).

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