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pincer
In chemistry, a transition metal pincer complex is a type of coordination complex with a pincer ligand. Pincer ligands are chelating agents that binds tightly to three adjacent coplanar sites in a meridional configuration. The inflexibility of the pincer-metal interaction confers high thermal stability to the resulting complexes. This stability is in part ascribed to the constrained geometry of the pincer, which inhibits cyclometallation of the organic substituents on the donor sites at each end. In the absence of this effect, cyclometallation is often a significant deactivation process for complexes, in particular limiting their ability to effect C-H bond activation. The organic substituents also define a hydrophobic pocket around the reactive coordination site. Stoichiometric and catalytic applications of pincer complexes have been studied at an accelerating pace since the mid-1970s. Most pincer ligands contain phosphines. Reactions of metal-pincer complexes are localized at three sites perpendicular to the plane of the pincer ligand, although in some cases one arm is hemi-labile and an additional coordination site is generated transiently. Early examples of pincer ligands (not called such originally) were anionic with a carbanion as the central donor site and flanking phosphine donors; these compounds are referred to as PCP pincers.
https://agilitegear.com/collections/pouches/products/pincer-placard?variant=42437806915836
Quick disconnects added.
Was attached to a plate carrier for a short time, was not used in the field.
Make me an trade offer.
Hello,
1) ($120)Up for grabs I have a brand new with tag 5.11 TecTac plate carrier, I have installed some quick clips if you have a molle placard
2)($60) Agilite Pincer Placard for M4 size magazines with G hooks or Clips
Buy both for $185
The placard doesn’t work on this specific carrier...