bipyramidal


Also found in: Medical.

bipyramidal

(ˌbaɪˈpɪrəmɪdəl)
adj
relating to a symmetrical structure consisting of two pyramids
References in periodicals archive ?
The compound, showed distorted pentagonal bipyramidal coordination geometry due to the larger cationic radius of the potassium.
Mn2 has distorted pentagonal bipyramidal geometry with one nitrogen from one dpb ligand, six oxygen from different three [H.sub.3]L ligands, by chelating bidentate, monodentate fashion and by [[mu].sup.2]-oxygen.
The Molymod Shapes of Molecules Model is an educational aid designed for students with learning disabilities to teach them how to create eight models that feature examples of coordination numbers 1 to 6, including linear hydrogen chloride, linear beryllium chloride, bent water, trigonal planar, pyramidal ammonia, tetrahedral methane, trigonal bipyramidal and octahedral sulfur hexafluoride.
The coordination sphere of the compound can be best described as trigonal bipyramidal. In the diamagnetic complex, two ttc molecules act as bidentate ligands that coordinate to the metal ion through their N-S atoms.
However, four distinct crystal morphologies are apparent: the typical bipyramidal crystal, related to Cry 1 proteins, cuboidal inclusions related to Cry 2 proteins and usually associated with bipyramidal crystals, amorphous and composite crystals releated to Cry 4 and Cyt proteins and flat, square crystals, related to Cry 3 protein (Lopez-Meza and Ibarra, 1996).
The Zn4 metal site has a very much distorted trigonal bipyramidal geometry with t value equal to 0.58.
Although, bipyramidal shape and presence of intercalated fat were pathognomonic for thymic hyperplasia, not all of them exhibit these features on CT.
In an EF-hand loop, the calcium ion is coordinated in a pentagonal bipyramidal configuration through six residues in positions of 1,3,5,7,9, and 12 of loop.
Additionally, according to information from the research team, the pigment has a crystal structure in which the chromophore that produces its intense blue is in a trigonal bipyramidal site, which means that the color can be tuned by adjusting the ratio of indium to magnesium.
4B) showed presence of calcium oxalate crystals (bipyramidal calcium oxalate dihydrate and dumbbell shaped calcium oxalate monohydrate) whereas in the urine of rottlerin treated hyperoxaluric rats (Fig.