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Point Group Symmetry

By Ngage
Perfect for teaching and studying, fun for playing, cool for decorating!
About
They have already got their sets: Professor Viktor N. Serezhkin, Professor Peter C. Burns!

Check out these models of 42 point groups of symmetry. The models are represented by molecules, which belong to 32 crystallographic and 10 noncrystallographic point groups. You can get one of the four preassembled sets with one click or select desired items individually.

If you are teaching or studying symmetry – you are on the right page! There is no better way of getting in touch with chemistry and symmetry than to hold the molecules in your hands! Perfect for presentation and examination in a classroom. Provides vivid demonstration of differences between crystallographic and noncrystallographic point groups. Can be used for communicating science or as toys for children. Some molecules can be used as keychains or for decoration.

You can choose among different types of versatile plastic, including colored plastic (monochromic, though). However, note, that white natural versatile plastic (the cheapest one, shown on all photos) is totally ok for these models. One recommendation is to have two sets: the 42 items FULL set 3D printed in white plastic (as it is cheaper) for practice (as it includes difficult examples) and the 17 items ALTERNATIVE set 3D printed in colored plastic for taking exams (as it represents only the most common point groups). This way you can easily distinguish the models between the two sets and you can keep the 17 items set in secret till time comes.

Some models represent molecules with untouched geometry obtained via the X-ray experiment, while other models are idealized or adapted for a clear representation of their symmetry. Still, all the molecules are real except for the one point group ‘I’ – the snub dodecahedron is provided instead. As chemical elements are indistinguishable in the models, they are picked so that the symmetry assigned based on geometry itself matches the real symmetry of the molecules. In several cases, multiple bonds and aromaticity are not shown to maintain correct symmetry. Some point groups are very rare and the corresponding molecules are big and, thus, more expensive than the others.

If you have any ideas of improving the set – please, send me a message! Any feedback is appreciated!

Scale of all models: 7 mm/Å

BONUS: Scientific Christmas tree constructed of Voronoi-Dirichlet polyhedra and Hirshfeld surfaces – a very pleasant and unexpected surprise for Christmas and New Year! This Christmas tree is fancy and very unusual, though looks very festive and cute. Such an unexpected surprise will make you look very creative and will initiate good vibes and cheer up people - exactly what we need on holidays! See the Scientific Christmas tree section for more details.

Point group symbols in Schoenflies and Hermann–Mauguin notations and chemical names of molecules are provided below.

#1 C1 1 bromofluoroacetic acid
#2 Ci ≡ S2 -1 N,N′-(1,2-ethanediyl)bis(acetamide)
#3 C2 2 dibromo-octamethyl-biphenyl
#4 Cs m phenanthro(9,10-c)-1,2,5-thiadiazole-1-oxide
#5 C2h 2/m tetra-aqua-bis(9-methyladenine)-copper(II)
#6 D2 222 trans-bis(ethylenediamine)-dichloro-cobalt(III)
#7 C2v mm2 1,2-dibromobenzene
#8 D2h mmm naphtalene
#9 C4 4 tetrakis(μ2-cyclohexane-carbodithioato-S,S')-di-platinum(II)
#10 S4 ≡ C4i -4 1,3,5,7-tetramethyl-cyclo-octa-cis,cis,cis,cis-1,3,5,7-tetraene
#11 C4h 4/m tetraazidocopper(II)
#12 D4 422 tetrathiacyclododecane
#13 C4v 4mm pentaborane(9)
#14 D2d -42m trans-dinitrato-tetrachloro-cerium(IV)
#15 D4h 4/mmm octachloro-di-rhenium
#16 C3 3 triphenylphosphine
#17 C3i ≡ S6 -3 hexakis(thiourea)bismuth(III)
#18 D3 32 tris(ethylenediamine)-cobalt(III)
#19 C3v 3m triquinacene
#20 D3d -3m 4,4′-di-iodobicubyl
#21 C6 6 alpha-cyclodextrin
#22 C3h -6 triimidazo-triazine
#23 C6h 6/m (1,2,3,4,5,6)cyclophane
#24 D6 622 hexanitrobenzene
#25 C6v 6mm (η6-hexamethylbenzene)-gallium(I)
#26 D3h -62m cyclopropane
#27 D6h 6/mmm benzene
#28 T 23 hexakis(tetrahydrofuran)-calcium
#29 Th m-3 hexa-aqua-cobalt(II)
#30 O 432 [V6P8O30] core in octakis(μ3-t-butylphosphonato)-hexaoxo-penta-vanadium(V)-vanadium(IV)
#31 Td -43m adamantane
#32 Oh m-3m cubane
#33 D4d -82m sulfur S8
#34 C5 5 1,2,3,4,5-pentamethyl-1’,2’,3’,4’,5’-pentaphosphaferrocene
#35 C5v 5m nitrosyl-(pentamethyl-cyclopentadienyl)-nickel
#36 C5h -10 pentamethyl­cyclopentadienyl
#37 D5 52 trans-bis(iodo)-pentakis(tetrahydrofuran-O)-ytterbium(III)
#38 D5d -5m ferrocene (staggered)
#39 D5h -10m2 ruthenocene (eclipsed)
#40 D6d -122m bis(η6-benzene)-chromium(I) (staggered)
#41 I 235 snub dodecahedron
#42 Ih m-3-5 buckminsterfullerene

Alternative set
#a1 C1 1 butan-2-ol
#a2 Ci ≡ S2 -1 (2R,3S)-tartaric acid
#a3 C2 2 (2S,3S)-tartaric acid
#a4 Cs m phenol
#a5 C2h 2/m 2,2'-bipyridine
#a6 D2 222 biphenyl
#a7 C2v mm2 phenantrene
#a8 D2h mmm tetrathiafulvalene
#a9 C4 4 cyclooctatetraene
#a10 S4 ≡ C4i -4 trans-dichloro-tetracarbonyl-osmium(II)
#a11 C4h 4/m trinitromethane
#a12 D4 422 tris(oxalato)-iron(III)
#a13 C4v 4mm methyl­cubane
#a14 D2d -42m dithionate anion
#a15 D4h 4/mmm pentacarbonyl iron
#a16 C3 3 phosphorus pentoxide
#a17 C3i ≡ S6 -3 hexahydroclosohexaborate anion
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