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Anderson‐Type Heteropolymolybdates Containing Tris(alkoxo) Ligands: Synthesis and Structural Characterization
Author(s) -
Hasenknopf Bernold,
Delmont Renaud,
Herson Patrick,
Gouzerh Pierre
Publication year - 2002
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200205)2002:5<1081::aid-ejic1081>3.0.co;2-w
Subject(s) - chemistry , tris , hydroxymethyl , manganese , heteroatom , crystallography , crystal structure , zinc , medicinal chemistry , inorganic chemistry , stereochemistry , organic chemistry , ring (chemistry) , biochemistry
Anderson‐type molybdopolyanions containing tris(alkoxo) ligands [MMo 6 O 18 {(OCH 2 ) 3 CR} 2 ] 3− (M = Mn III , Fe III ) and [H 2 MMo 6 O 18 {(OCH 2 ) 3 CR} 2 ] 2− (M = Ni II , Zn II ), (R = CH 3 , NO 2 , CH 2 OH), were prepared by treatment of [N(C 4 H 9 ) 4 ] 4 [α‐Mo 8 O 26 ] with tris(hydroxymethyl)methane derivatives in the presence of manganese(III) acetylacetonate, iron(III) acetylacetonate, nickel(II) acetate, or zinc(II) acetate. The complexes were structurally characterized in solution, and also by single‐crystal X‐ray diffraction in the cases of [N(C 4 H 9 ) 4 ] 3 [MnMo 6 O 18 {(OCH 2 ) 3 CNO 2 } 2 ], [N(C 4 H 9 ) 4 ] 2 [H 2 NiMo 6 O 18 {(OCH 2 ) 3 CCH 2 OH} 2 ], and [N(C 4 H 9 ) 4 ] 2 [H 2 ZnMo 6 O 18 {(OCH 2 ) 3 CCH 3 } 2 ]. Two tris(alkoxo) ligands replace the six hydroxo groups usually found in Anderson polyanions of formula [H 6 MMo 6 O 24 ] n − . The complex structures may be divided into two groups: In the first one the tris(alkoxo) ligands are bound entirely to the central heteroatom, while in the second one they cap a tetrahedral cavity. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)