STUDY OF ATOM BOMBARDMENT ISOMERS CLUSTERS Ti7. MOLECULARDYNAMICS SIMULATION by N.A. Pan'kin

“…Molecular dynamics has been performed of synthesis processes and ion bombardment titanium clusters Ti7 with pentagonal bipyramid structures (space group –D5h) and octahedron with an attached one of its faces a tetrahedron (C3ν). …”
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The distribution of fullerene n anoparticles in the body in preclinical studies by R. N. Alyautdin, B. K. Romanov, V. A. Merkulov

“…C60 fullerene consisting of 60 carbon atoms is a closed structure comprising 12 hexagonal and 20 pentagonal faces. The diameter of the molecule is 0.71 nm. …”
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Quantifying the Variation in the Geometries of the Outer Rims of Corolla Tubes of <i>Vinca major</i> L. by Lin Wang, Qinyue Miao, Ülo Niinemets, Johan Gielis, Peijian Shi

“…This work indicates that the pentagonal or quadrangular corolla tubes (in top view) can both be modeled by the Gielis equation and demonstrates that the pentagonal or quadrangular corolla tubes of plants tend to form radial symmetrical geometries during their development and growth.…”
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Crystal structure of [UO2(NH3)5]NO3·NH3 by Patrick Woidy, Florian Kraus

“…The resulting [UO2(NH3)5] coordination polyhedron is best described as a pentagonal bipyramid with the O atoms forming the apices. …”
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Bis(acetato-kappa O-2,O `)diphenyl(pyridine-kappa N)tin(IV) by Khaledi, H., Ali, H.M., Abdulla, M.A.

“…In both molecules, the Sn-IV atom is sevencoordinated in a distorted pentagonal-bipyramidal geometry with the two phenyl groups in axial positions. …”

Bis (acetato-2O, O') diphenyl (pyridine-N) tin (IV) by Khaledi, H., Abdulla, M.A., Ali, Hapipah Mohd

“…In both molecules, the SnIV atom is sevencoordinated in a distorted pentagonal-bipyramidal geometry with the two phenyl groups in axial positions. …”
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Bis(acetato-kappa O-2,O ')diphenyl(pyridine-kappa N)tin(IV) by Khaledi, H., Abdulla, M.A., Ali, Hapipah Mohd

“…In both molecules, the Sn-IV atom is sevencoordinated in a distorted pentagonal-bipyramidal geometry with the two phenyl groups in axial positions. …”
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Genesis of Pyrite in Clastic Rocks of Deep Salt-Related Strata in the Simao Basin and Its Implication for Potash Mineralization: A Case Study of the Well MK-3 by Zhongying Miao, Mianping Zheng, Pengcheng Lou, Qihui Xu, Yuanying Liu

“…The crystal morphology is mainly pentagonal-dodecahedral and irregularly granular, with a small amount of cuboidal pyrite. …”
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Methods to program and to probe RNA tertiary structure with nucleic acid origami by Parsons, Molly F.

“…I tested this anchoring approach to attach a 232-nt HIV-1 RNA fragment to an RNA-scaffolded pentagonal bipyramid as a method to improve cryo-EM characterization. …”
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Heptacoordination in Organotin(IV) Complexes: Spectroscopic and Structural Studies of 2,6-Diacetylpyridine bis(thiosemicarbazone)di-n-butyltin(IV) Chloride Nitromethane Solvate, [n... by Sousa Gerimário F. de, Valdés-Martínez Jesús, Pérez Georgina E., Toscano Rubén A., Abras Anuar, Filgueiras Carlos A. L.

“…Two new cases of heptacoordination in organotin(IV) complexes are described. Both possess pentagonal bipyramidal geometry and show the organic groups on the axial positions, with the ligands forming five bonds to tin(IV) on the equatorial plane. …”
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Similarity and a Duality for Fullerenes by Jennifer J. Edmond, Jack E. Graver

“…Fullerenes are molecules of carbon that are modeled by trivalent plane graphs with only pentagonal and hexagonal faces. Scaling up a fullerene gives a notion of similarity, and fullerenes are partitioned into similarity classes. …”
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Bis(&amp;#956;-4-bromobenzoato)-&amp;#954;3O,O&amp;#8242;:O&amp;#8242;;O:O,O&amp;#8242;-bis[&amp;#956;-1,3-bis(pyridin-4-yl)propane-&amp;#954;2N:N&amp;#8242;]bis[(4-bromobenzoato-&... by Dong Liu, Yan-Qin Zi, Seik Weng Ng

“…The CdII cation is seven-coordinated with a geometry that can be considered as distorted pentagonal bipyramidal, with the N atom of the N-heterocyclic units occupying the apical sites and the O atoms of the 4-bromobenzoate units in the equatorial plane. …”
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Skeletal Rearrangements of the C₂₄₀ Fullerene: Efficient Topological Descriptors for Monitoring Stone–Wales Transformations by Denis Sh. Sabirov, Ottorino Ori

“…The Stone–Wales transformations of C₂₄₀ can produce the defected isomers containing heptagons, extra pentagons and other unordinary rings. Their formations have been described in terms of (i) quantum-chemically calculated energetic, molecular, and geometric parameters; and (ii) topological indices. …”
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Di-mu-nicotinato-kappa N-2/O;kappa O-2/N-bis[aquabis(4-bromobenzyl)(nicotinato-kappa O-2,O `)tin(IV)] by Keng, C.T., Lo, K.M., Ng, S.W.

“…The two Sn atoms exist in trans-C2SnNO4 pentagonal-bipyramidal geometries. Adjacent dinuclear units are linked by O-H...N hydrogen bonds, generating a linear chain, which propagates in the b-axis direction. …”

Bis(pyridine-κN){N2,N2′-[1,1′-(pyridine-2,6-di­yl)di­ethyl­­idyne]benzene­sulfono­hydrazonato-κ5O,N,N′,N′′,O′}nickel(II) by Yusnita, Juahir, Ali, Hapipah Mohd, Abdulla, Mahmood A., Robinson, Ward T., Khaledi, Hamid

“…In the crystal structure of the title compound, [Ni(C21H19N5O4S2)(C5H5N)2], the metal center is seven-coordinate, with an approximate penta­gonal-bipyramidal configuration. The Ni atom is chelated by a dianionic penta­dentate Schiff base via the pyridine N atom, the two azomethine N atoms and the two sulfonyl O atoms. …”
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ARIATIONS OF CONCAVE PYRAMIDS OF SECOND SORT WITH AN EVEN NUMBER OF BASE SIDES by Marija Obradovic, Slobodan Misic, Branislav Popkonstantinovic

“…The plane net is composed of double row of equilateral triangles, so it is possible to form a regular faced pyramid even with bases greater than pentagonal, whereat the obtained polyhedron will be concave. …”
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Potential Medical Use of Fullerenols After Two Decades of Oncology Research by Rade Injac PhD

“…They are composed of hexagonal and pentagonal rings that create closed structures. Almost 4 decades ago, fullerenes were identified in the form of C 60 and C 70 , and following the award of the Nobel Prize in Chemistry for this discovery in 1996, many laboratories started working on their water-soluble derivatives that could be used in different industries, including pharmaceutical industries. …”
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Bis[&amp;#956;-N-(2-oxidobenzylidene)pyridine-2-carbohydrazidato]bis[chlorido(methanol-&amp;#954;O)erbium(III)] by Hua Yang

“…The coordination geometry is based on a pseudo-pentagonal bipyramid. Linear supramolecular chains along [010] are formed in the crystal packing through O&amp;#8212;H...Cl hydrogen bonds.…”
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New Qinscyphus material from the Fortunian of South China by Yanan Zhang, Yunhuan Liu, Tiequan Shao, Jiachen Qin

“…The apical part of Qinscyphus is considered to be soft during early ontogeny, and the inverted pentagonal pyramid may gradually form with growth and development. …”
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Bis(nonafluorobutanesulfonato-&#954;O)dioxidotris(tetrahydrofuran-&#954;O)uranium(VI) by Koichiro Takao, Yasuhisa Ikeda

“…In the title compound, [U(C4F9O3S)O2(C4H8O)3], each UVI ion is located on a twofold rotation axis and is seven-coordinated by two terminal O atoms in the axial positions [U&#8212;O = 1.737&#8197;(5)&#8197;&#197;] and five O atoms from two monodentate nonafluorobutanesulfonate (NfO&#8722;) and three tetrahydrofuran ligands in the equatorial plane [U&#8212;O = 2.388&#8197;(5)&#8211;2.411&#8197;(4)&#8197;&#197;] in a pentagonal&#8211;bipyramidal geometry. The crystal packing exhibits weak intermolecular C&#8212;H...O hydrogen bonds involving the non-coordinated O atoms of the NfO&#8722; ligands.…”
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