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About the Reaction of C(PPh 3 ) 2 with [M(CO) 6 ] (M = Cr, Mo): Unusual Formation of μ‐Carbonato Complexes of Mo under Participation of THF
Author(s) -
Petz Wolfgang,
Neumüller Bernhard,
Heitbaum Maya,
Weller Frank
Publication year - 2020
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.201900290
Subject(s) - chemistry , adduct , thermal decomposition , medicinal chemistry , carbonate , decomposition , inorganic chemistry , organic chemistry
Attempts to synthesize complexes of group 6 carbonyl compounds [M(CO) 6 ] (M = Cr, Mo, W) with the carbone C(PPh 3 ) 2 ( 1 ) via the photo chemically created adducts [(CO) 5 M(THF)] lead to quantitative formation of the salts [HC(PPh 3 ) 2 ] 2 [M 2 (CO) 10 ] ( 2 , Cr; 3 , Mo; 4 , W). Alternatively, a long‐time thermal reaction of [Mo(CO) 6 ] performed with 1 in THF generates a series of products initiated by a Wittig‐type reaction. In addition to 3 , minor amounts of [(CO) 5 MoCCPPh 3 ] ( 8 ), [(CO) 5 MoO 2 CC{PPh 3 } 2 ] ( 5 ), and the carbonate complexes [HC(PPh 3 ) 2 ] 2 [(CO) 5 Mo(CO 3 )Mo(CO) 4 ] ( 6 ) and [HC(PPh 3 ) 2 ] 2 [(CO) 4 Mo(CO 3 )Mo(CO) 4 ] ( 7 ) were found. Compounds 2 , 3 , 5 , 6 , and 7 were characterized by X‐ray analyses, 31 P NMR, and IR spectroscopy. The water, necessary for the formation of the carbonate, stems from decomposition of THF.