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Synthesis and Structure of the Bicyclic [Sn 4 Se 11 ] 6– Anion in Na 6 Sn 4 Se 11 · 22 H 2 O
Author(s) -
Loose A.,
Sheldrick W. S.
Publication year - 2001
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200109)627:9<2051::aid-zaac2051>3.0.co;2-6
Subject(s) - bicyclic molecule , adamantane , crystallography , ion , tin , chemistry , atom (system on chip) , ring (chemistry) , crystal structure , stereochemistry , organic chemistry , computer science , embedded system
Na 6 Sn 4 Se 11 · 22 H 2 O can be crystallised at –8 °C as yellow‐orange needles from the 1 : 2 H 2 O/CH 3 OH mother liquor of a superheated reaction mixture of NaOH(s), Sn and Se. The bicyclic [Sn 4 Se 11 ] 6– anion exhibits crystallographic C 2 symmetry and is composed of corner‐bridged SnSe 4 tetrahedra. Two opposite tin atoms of an Sn 4 Se 4 8‐membered ring are linked by a common Se atom, thereby affording two 6‐membered boat‐shaped Sn 3 Se 3 rings with a shared Sn–Se–Sn bridging unit. [Sn 4 Se 11 ] 6– thus represents the immediate precursor of the well‐known adamantane‐like [Sn 4 Se 10 ] 4– anion.