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The chemical compound "5.5.11.11.17.17.23.23-Octamethyl-octaphenyl-pentacyclo<13.9.13.13.17.21.19.19>dodecasiloxan" is a complex cyclic siloxane molecule with a unique structure. It consists of a pentacyclic framework with 12 silicon atoms, 12 oxygen atoms, and 8 phenyl rings, each attached to a silicon atom. The compound is further characterized by the presence of 8 methyl groups, which are attached to the silicon atoms as well. This molecule is notable for its large size and intricate arrangement, which can have implications for its physical and chemical properties, such as stability, reactivity, and potential applications in materials science or as a model for studying the behavior of larger cyclic compounds.

3591-32-0

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3591-32-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3591-32-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,9 and 1 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 3591-32:
(6*3)+(5*5)+(4*9)+(3*1)+(2*3)+(1*2)=90
90 % 10 = 0
So 3591-32-0 is a valid CAS Registry Number.

3591-32-0Downstream Products

3591-32-0Relevant academic research and scientific papers

Synthesis, Structures, and Thermal Properties of Symmetric and Janus “Lantern Cage” Siloxanes

Uchida, Taishi,Egawa, Yasunobu,Adachi, Takuto,Oguri, Naoki,Kobayashi, Masato,Kudo, Takako,Takeda, Nobuhiro,Unno, Masafumi,Tanaka, Ryoji

, p. 1683 - 1686 (2019)

Symmetric and asymmetric (Janus-type) new “lantern cage” siloxanes (PhSiO1.5)4(Me2SiO)4(RSiO1.5)4 (R=Ph or iBu) were synthesized through reaction of all-cis-[PhSi(OSiMe2Br)O]4 with all-cis-[RSi(OH)O]4 (R=Ph or iBu). These precursors were obtained by facile two or three-step reactions from commercially available compounds. The spectroscopic properties of the resulting products were fully characterized and they showed high thermal stability and sublimation without decomposition. The crystal structures clearly indicated that the internal vacancy volumes of the lantern cages are considerably larger than that of octaphenylsilsesquioxane (PhSiO1.5)8. DFT calculations of the lantern cage showed a distinctly different electronic state from that of octasilsesquioxane. These results suggest that lantern cage siloxanes have a characteristic “field” in the molecule.

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