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Alkali Metal Yttrium neo ‐Pentoxide Double Alkoxide Precursors to Alkali Metal Yttrium Oxide Nanomaterials
Author(s) -
Boyle Timothy J.,
Neville Michael L.,
Sears Jeremiah M.,
Cramer Roger
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600138
Subject(s) - yttrium , alkali metal , pentoxide , inorganic chemistry , nanomaterials , oxide , metal , alkoxide , materials science , chemistry , nuclear chemistry , nanotechnology , vanadium , organic chemistry , catalysis
A series of alkali metal yttrium neo ‐pentoxide ([AY(ONep) 4 ]) compounds were developed as precursors to alkali yttrium oxide (AYO 2 ) nanomaterials. The reaction of yttrium amide ([Y(NR 2 ) 3 ] where R=Si(CH 3 ) 3 ) with four equivalents of H‐ONep followed by addition of [A(NR 2 )] (A=Li, Na, K) or A o (A o =Rb, Cs) led to the formation of a complex series of A n Y(ONep) 3+n species, crystallographically identified as [Y 2 Li 3 (μ 3 ‐ONep)(μ 3 ‐HONep)(μ‐ONep) 5 (ONep) 3 (HONep) 2 ] ( 1 ), [YNa 2 (μ 3 ‐ONep) 4 (ONep)] 2 ( 2 ), {[Y 2 K 3 (μ 3 ‐ONep) 3 (μ‐ONep) 4 (ONep) 2 (η ξ ‐tol) 2 ][Y 4 K 2 (μ 4 ‐O)(μ 3 ‐ONep) 8 (ONep) 4 ]•η x ‐tol]} ( 3 ), [Y 4 K 2 (μ 4 ‐O)(μ 3 ‐ONep) 8 (ONep) 4 ] ( 3 a ), [Y 2 Rb 3 (μ 4 ‐ONep) 3 (μ‐ONep) 6 ] ( 4 ), and [Y 2 Cs 4 (μ 6 ‐O)(μ 3 ‐ONep) 6 (μ 3 ‐HONep) 2 (ONep) 2 (η x ‐tol) 4 ]•tol ( 5 ). Compounds 1–5 were investigated as single source precursors to AYO x nanomaterials following solvothermal routes (pyridine, 185 o C for 24 h). The final products after thermal processing were found by powder X‐ray diffraction experiments to be Y 2 O 3 with variable sized particles based on transmission electron diffraction. Energy dispersive X‐ray spectroscopy studies indicated that the heavier alkali metal species were present in the isolated nanomaterials.