TY - JOUR
T1 - A new class of CVD precursors to metal borides
T2 - Cr(B3H 8)2 and related octahydrotriborate complexes
AU - Goedde, Dean M.
AU - Girolami, Gregory S.
PY - 2004/10/6
Y1 - 2004/10/6
N2 - Treatment of CrCl3 with sodium octahydrotriborate, NaB3H8, affords a thermally unstable purple liquid thought to be a chromium(III) hydride of stoichiometry CrH(B3H8)2. This hydride converts rapidly at room temperature to the chromium(II) complex Cr(B3H8)2, which adopts a square-planar structure in which four hydrogen atoms form the coordination sphere of the chromium atom. This chromium(II) species forms six-coordinate Lewis base adducts Cr(B3H8)2L2, where L is Et2O, thf, or PMe3; the first two of these adopt trans geometries, whereas the latter is cis. Volatile Cr(B3H8)2 is the first homoleptic transition metal complex of the octahydrotriborate anion, and it readily forms CrB2 thin films by CVD at 250 °C.
AB - Treatment of CrCl3 with sodium octahydrotriborate, NaB3H8, affords a thermally unstable purple liquid thought to be a chromium(III) hydride of stoichiometry CrH(B3H8)2. This hydride converts rapidly at room temperature to the chromium(II) complex Cr(B3H8)2, which adopts a square-planar structure in which four hydrogen atoms form the coordination sphere of the chromium atom. This chromium(II) species forms six-coordinate Lewis base adducts Cr(B3H8)2L2, where L is Et2O, thf, or PMe3; the first two of these adopt trans geometries, whereas the latter is cis. Volatile Cr(B3H8)2 is the first homoleptic transition metal complex of the octahydrotriborate anion, and it readily forms CrB2 thin films by CVD at 250 °C.
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U2 - 10.1021/ja046906c
DO - 10.1021/ja046906c
M3 - Article
C2 - 15453732
AN - SCOPUS:4644306526
SN - 0002-7863
VL - 126
SP - 12230
EP - 12231
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 39
ER -