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4,7,13,18-Tetra­oxa-1,10-diazo­nia­bicyclo­[8.5.5]icosane bis­(hexa­fluorido­phosphate)

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TLDR
The asymmetric unit of the title structure, C14H30N2O4 2+·2PF6 −, contains the anion and half of the cation, the latter being completed by a crystallographic twofold axis.
Abstract
The asymmetric unit of the title structure, C(14)H(30)N(2)O(4) (2+)·2PF(6) (-), contains the anion and half of the cation, the latter being completed by a crystallographic twofold axis. The cation has a cage structure with the ammonium H atoms pointing into the cage. These H atoms are shielded from inter-molecular inter-actions and form only intra-molecular contacts. There are short inter-molecular C-H⋯F inter-actions in the structure, but no conventional inter-molecular hydrogen bonds.

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J. Appl. Cryst.の発刊に際して

良二 上田
References
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A short history of SHELX

TL;DR: This paper could serve as a general literature citation when one or more of the open-source SH ELX programs (and the Bruker AXS version SHELXTL) are employed in the course of a crystal-structure determination.
Journal ArticleDOI

WinGX suite for small-molecule single-crystal crystallography

TL;DR: The category Computer Program Abstracts provides a rapid means of communicating up-to-date information concerning both new programs or systems and signi®cant updates to existing ones.
Journal ArticleDOI

J. Appl. Cryst.の発刊に際して

良二 上田
Journal ArticleDOI

publCIF: software for editing, validating and formatting crystallographic information files

TL;DR: publCIF is an application designed for creating, editing and validating crystallographic information files (CIFs) that are used in journal publication and provides a web interface to the checkCIF service of the International Union of Crystallography (IUCr), which provides a full crystallographic analysis of the structural data.
Journal ArticleDOI

Nuclear magnetic resonance spectrum of the fluoride anion

TL;DR: In this paper, the fluorine NMR shift of the fluoride anion in CH 3 CN solution has been recorded and the observed shift of -74 ppm significantly differs from the value of -150.6 ppm recently reported.
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