TY - JOUR
T1 - The synthesis of W-O-M (M=Al, Ti, Ni, Zn) μ-oxo clusters by hydrolysis of tungsten aminoalkoxides and their structural characterisation
AU - Choujaa, Hamid
AU - Johnson, Andrew L.
AU - Kociok-Köhn, Gabriele
AU - Molloy, Kieran C.
PY - 2013/10/31
Y1 - 2013/10/31
N2 - Three novel heterobimetallic W-O-M clusters have been synthesised by the hydrolysis of mixtures of W(O)(OPr)(bdmap) with Ti(OPr), Zn(acac) and Al(OPr), respectively. A fourth, related W-O-Ni cluster has been obtained by adventitious hydrolysis of a mixture of W(O)(OMe) and Ni(dmap) [Hbdmap=1,3-bis-(dimethylamino)-propan-2-ol; Hdmap=1-(dimethylamino)propan-2-ol]. WTi(O)(μ-O)(OPr)(μ-bdmap) (1) adopts a central WTiO core with an adamantane-like structure while WAl(O)(OPr)(μ-O)(μ-bdmap) (3) has an analogous WAlO core but which adopts an isomeric cube arrangement with two parallel sides missing. WZn(O)(μ-O)(OPr)(acac)(μ-bdmap) (2) is similar to 1 but the two bidentate acac groups result in the elimination of one μ-O bridge; the resulting WZnO core forms an adamantane structure with one W-O-Zn linkage missing. In contrast, WNi(O)(OMe)(μ-OMe)(μ-O)(dmap) (4) forms a tetrameric square of four linked W-O-Ni units.
AB - Three novel heterobimetallic W-O-M clusters have been synthesised by the hydrolysis of mixtures of W(O)(OPr)(bdmap) with Ti(OPr), Zn(acac) and Al(OPr), respectively. A fourth, related W-O-Ni cluster has been obtained by adventitious hydrolysis of a mixture of W(O)(OMe) and Ni(dmap) [Hbdmap=1,3-bis-(dimethylamino)-propan-2-ol; Hdmap=1-(dimethylamino)propan-2-ol]. WTi(O)(μ-O)(OPr)(μ-bdmap) (1) adopts a central WTiO core with an adamantane-like structure while WAl(O)(OPr)(μ-O)(μ-bdmap) (3) has an analogous WAlO core but which adopts an isomeric cube arrangement with two parallel sides missing. WZn(O)(μ-O)(OPr)(acac)(μ-bdmap) (2) is similar to 1 but the two bidentate acac groups result in the elimination of one μ-O bridge; the resulting WZnO core forms an adamantane structure with one W-O-Zn linkage missing. In contrast, WNi(O)(OMe)(μ-OMe)(μ-O)(dmap) (4) forms a tetrameric square of four linked W-O-Ni units.
UR - http://www.scopus.com/inward/record.url?scp=84881522734&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1016/j.poly.2013.06.047
U2 - 10.1016/j.poly.2013.06.047
DO - 10.1016/j.poly.2013.06.047
M3 - Article
AN - SCOPUS:84881522734
SN - 0277-5387
VL - 63
SP - 199
EP - 206
JO - Polyhedron
JF - Polyhedron
ER -