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New O‐centered titanium chalcohalide: synthesis and structure of Ti 4 O(Se 2 ) 4 Br 6
Author(s) -
Poltarak Pavel,
Komarov Vladyslav,
Gayfulin Yakov,
Artemkina Sofya,
Fedorov Vladimir
Publication year - 2021
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/zaac.202100130
Subject(s) - monoclinic crystal system , crystallography , crystal structure , titanium , diselenide , bromide , chemistry , materials science , stereochemistry , inorganic chemistry , selenium , metallurgy
New O‐centered tetranuclear titanium complex Ti 4 O(Se 2 ) 4 Br 6 has been prepared from TiSe 1.73 , Se, SeO 2 and Br 2 at moderate temperature by ampule synthesis. Its X‐ray crystal structure (monoclinic space group P 2 1 / c, a= 9.4850(2), b =11.4667(2), c =19.1413(5)Å, β =92.0080(10)°, Z =4, V =2080.56(8)Å 3 ) includes molecular complex Ti 4 O(Se 2 ) 4 Br 6 based on fragment {Ti 4 (μ 4 ‐O)} coordinated by diselenide (Se 2 ) 2− and bromide bridging ligands. Ti 4 O(Se 2 ) 4 Br 6 is a new member of family of O‐centered tetranuclear complexes with the fragment { M 4 (μ 4 ‐O)( Q 2 ) 4 } ( M =Ti, Nb, Ta; Q =S, Se, Te); here we discuss its synthetic features, crystal and electronic structure.