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Journals / Communications Faculty of Sciences University of Ankara Series B Chemistry and Chemical Engineering / 2019 / Cilt: 61 - Sayı: 1

DETERMINATION OF ABSOLUTE CONFIGURATION OF 8,8,10,10TETRACHLORO-20,21-DIHYDRO-18H,23H-6,12-EPIAZENO-6λ5,8λ5,10λ5, 12λ5[1,3,2]BENZOXAZAPHOSPHONINO[2',3':8,9][1,3,5,7,9,2,4,6,8] PENTAAZATETRAPHOSPHACYCLOUNDSYNO[2,1-B][1,3,2] BENZOXAZAPHOSPHONINE USING X-RAY CRYSTALLOGRAPHY

Gamze ELMAS
Aytuğ OKUMUŞ
Satiye Sevim İSAOĞLU
Tuncer HÖKELEK
Zeynel KILIÇ
Pages
1–14
Publication Date
2019-12-31
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The space group is P bnm with cell parameters of a = 6.2692(2), b = 15.8111(3), c = 22.9393(4) Å.

📌 3 Key Takeaways

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Objective & Hypothesis:The title compound, 8, 8, 10, 10-tetrachloro-20,21-dihydro-18H, 23H-6, 12epiazeno-6λ5, 8λ5, 10λ5, 12λ5-[1,3,2] benzoxazaphosphonino [2',3':8,9][1,3,5,7,9,2,4,6,8] pentaazatetraphosphacyclo undsyno [2,1-b] [1,3,2] benzoxazaphosphonine; C16H16Cl4N6O2P4, a cyclotetraphosphazene, has a tetrachloro-2, 4-spiro-ansa-spiro (tetrachloro-2,4-sas) architecture in which the bicyclic structure has consisted of eightmembered tetrameric N4P4 and seven-membered ansa (N1/P1/P1′/N4′/C8′/C8/N4) rings fused with a common PNP fragment.
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Key Findings & Data:P1 and P1′ atoms are stereogenic centres.
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Conclusion & Impact:The space group is P bnm with cell parameters of a = 6.2692(2), b = 15.8111(3), c = 22.9393(4) Å.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Cyclotetraphosphazene · spiro-ansa-spiro-Structure · X-ray crystallography

Abstract

The title compound, 8, 8, 10, 10-tetrachloro-20,21-dihydro-18H, 23H-6, 12epiazeno-6λ5, 8λ5, 10λ5, 12λ5-[1,3,2] benzoxazaphosphonino [2',3':8,9][1,3,5,7,9,2,4,6,8] pentaazatetraphosphacyclo undsyno [2,1-b] [1,3,2] benzoxazaphosphonine; C16H16Cl4N6O2P4, a cyclotetraphosphazene, has a tetrachloro-2, 4-spiro-ansa-spiro (tetrachloro-2,4-sas) architecture in which the bicyclic structure has consisted of eightmembered tetrameric N4P4 and seven-membered ansa (N1/P1/P1′/N4′/C8′/C8/N4) rings fused with a common PNP fragment. The asymmetric unit possesses one-half of the molecule. P1 and P1′ atoms are stereogenic centres. In addition, there is a mirror plane passing through the N3 and N1 atoms in the molecule, and therefore, this compound is in meso form (RS/SR). According to the checkcif result, it is found that the absolute configuration of P1 and/or P1′ phosphorus centers is RS, displaying that in the solid-state there is only one enantiomer in the unit cell. The space group is P bnm with cell parameters of a = 6.2692(2), b = 15.8111(3), c = 22.9393(4) Å.

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Cite This Article

ELMAS, G., OKUMUŞ, A., İSAOĞLU, S. S., HÖKELEK, T., KILIÇ, Z. (2019). DETERMINATION OF ABSOLUTE CONFIGURATION OF 8,8,10,10TETRACHLORO-20,21-DIHYDRO-18H,23H-6,12-EPIAZENO-6λ5,8λ5,10λ5, 12λ5[1,3,2]BENZOXAZAPHOSPHONINO[2',3':8,9][1,3,5,7,9,2,4,6,8] PENTAAZATETRAPHOSPHACYCLOUNDSYNO[2,1-B][1,3,2] BENZOXAZAPHOSPHONINE USING X-RAY CRYSTALLOGRAPHY. Communications Faculty of Sciences University of Ankara Series B Chemistry and Chemical Engineering, Cilt: 61 - Sayı: 1, 1–14. https://ajindex.com/articles/827434

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