Eight-coordinate fluoride in a silicate double-four-ring

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Eight-coordinate fluoride in a silicate double-four-ring.

Fluoride, nature's smallest anion, is capable of covalently coordinating to eight silicon atoms. The setting is a simple and common motif in zeolite chemistry: the box-shaped silicate double-four-ring (D4R). Fluoride seeks its center. It is the strain of box deformation that keeps fluoride in the middle of the box, and freezes what would be a transition state in its absence. Hypervalent bonding...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2017

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.1615742114