bipyramidal

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bipyramidal

adjective Consisting of 2 pyramids placed base to base; having a pyramid at each of the extremities.

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The newly synthesized low-dimensional network is unique in the sense that the potassium metal ion is forming seven bonds through coordination with the four sulfide ions of thiol moieties of four different thiadiazole rings, one bond with nitrogen atom of azine nitrogens and two bonds with oxygen atoms of two hydroxyl ions observing a distorted pentagonal bipyramidal geometry.

Formulation of an Unprecedented Potassium Thiadiazolate Framework Via In-Situ Ligand Synthesis

Although crystal number varied from isolate to isolate, all showed the presence of bipyramidal, cuboidal, round coleopteran specific crystals.

Isolation, Characterization and Crystal Morphology Study of Bacillus thuringiensis Isolates from Soils of Punjab

Symmetry between S and R blocks symmetry breaks due to trigonal bipyramidal 2b site.

STRUCTURAL AND MAGNETIC PROPERTIES OF Pb-DOPED Ba Fe 12 O 19 by Co-PRECIPITATED METHOD

Crans, "Vanadium-phosphatase complexes: phosphatase inhibitors favor the trigonal bipyramidal transition state geometries," Coordination Chemistry Reviews, vol.

Studies of the Effectiveness of Bisphosphonate and Vanadium-Bisphosphonate Compounds In Vitro against Axenic Leishmania tarentolae

without a spicule) consisted of euhedral prismatic bipyramidal crystals (Figure 23, right).

Fracture-filled synthetic emerald, with synthetic quartz inclusions

Based on the morphology, we have distinguished two groups of zircon grains: (1) euhedral elongated bipyramidal prisms and (2) stubby prisms.

Zircon U-Pb and Hf isotopic constraints on the genesis of a post-kinematic S-type Variscan tin granite: the Logrosan cupola (Central Iberian Zone)

Lithium organometailic reagent.--Both the monosubstituted and disubstituted transition states, 2 and 4 respectively, for the ethynyl substitution of fluorine with a lithium counter cation displayed unconventional geometry at the trigonal bipyramidal boron center.

A preliminary computation study of counter ion effect on transition state models in ethynyl substitution of fluorine in F-BODIPY

Gray, "Plasmonic interactions and optical forces between au bipyramidal nanoparticle dimers," The Journal of Physical Chemistry A, Vol.

Modeling of optical trapping using double negative index fishnet metamaterials

The pigment was accidentally discovered when some manganese compounds came out of a 2,000 degree Fahrenheit oven transformed into a beautiful blue, which researchers later determined was due to an unusual "trigonal bipyramidal coordination" of their molecules that changed when exposed to extreme heat.

New 'cool blue' compound to keep buildings cool sans air-conditioning

NUMBER OF 1 EXAMPLES MOLECULAR BOND ANGLE EQUIVALENT SHAPE BOND 2 [CO.sub.2] linear 180 [degrees] = [cos.sub.-1] (-1/1) 3 [NO.sup.3], trigonal 120 [degrees] = [cos.sub.-1] [BF.sup.3] planar (-1/2) 4 [CH.sup.4], tetrahedral 109.471 = [cos.sub.-1] [NH.sup.4+] [degrees] (-1/3) 5 [PF.sup.5] trigonal 90[degrees] = [cos.sub.-1] bipyramidal and 120 (-1/4) [degrees] 6 [SF.sup.6] octahedral 90 [degrees] = [cos.sub.-1] (-1/5) Table 1: the idealized equilibrium bond angles in molecules with a central atom surrounded by 2, 3, 4, 5, and 6 equivalent bonds.

Why is the tetrahedral bond angle 109[degrees]? the tetrahedron-in-a-cube

Charcot-Leyden crystals (degenerated eosinophils) are present as long, needle-shaped, or bipyramidal eosinophilic crystals (figure 2).

Allergic fungal sinusitis

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