New neutral [Sr(Q)(2)(L)(n)](m) or ionic (imH(2))(2)[Sr-2(Q)(6)] air stable complexes (QH = 1-phenyl-3-methyl-4- R(C=O)-pyrazol-5- one; in detail Q = Q(T) for R = CH2CMe3, Q = Q(P) for R = Ph and Q = Q(F) for R = CF3; n = m = 1 for L = tetraglyme (2,5,8,11,14-pentaoxapentadecane); n = m = 2 for L = H2O; n = 2 and m = 1 for moeH (2-methoxyethanol), dmaeH (N,N-dimethylaminoethanol) or phen (1,10-phenanthroline); imH = imidazole) have been synthesized and fully characterized. The X-ray crystal structures of [Sr(Q(T))(2)(moeH)(2)](2) and of (imH(2))(2)[Sr-2(Q(T))(6)] have been determined. The compound [Sr(Q(T))(2)(moeH)(2)](2) contains an eight-co-ordinate Sr atom in a square antiprismatic environment, due two bidentate chelating Q donors and two bidentate 2-methoxyethanol ligands. The compound (imH(2))(2)[Sr-2(Q(T))(6)] is composed of two imidazolium cations and a dianionic fragment [Sr-2(Q(T))(6)](2-), which is a centrosymmetric dimer containing four terminal and two bridging Q donor ligands.
A new family of ionic dinuclear (imH2)2[Sr2(Q)6] compounds (imH = imidazole; QH = 1-phenyl-3-methyl-4-acylpyrazol-5-one).
MARCHETTI, Fabio;PETTINARI, Claudio;PETTINARI, Riccardo;CINGOLANI, Augusto;
2002-01-01
Abstract
New neutral [Sr(Q)(2)(L)(n)](m) or ionic (imH(2))(2)[Sr-2(Q)(6)] air stable complexes (QH = 1-phenyl-3-methyl-4- R(C=O)-pyrazol-5- one; in detail Q = Q(T) for R = CH2CMe3, Q = Q(P) for R = Ph and Q = Q(F) for R = CF3; n = m = 1 for L = tetraglyme (2,5,8,11,14-pentaoxapentadecane); n = m = 2 for L = H2O; n = 2 and m = 1 for moeH (2-methoxyethanol), dmaeH (N,N-dimethylaminoethanol) or phen (1,10-phenanthroline); imH = imidazole) have been synthesized and fully characterized. The X-ray crystal structures of [Sr(Q(T))(2)(moeH)(2)](2) and of (imH(2))(2)[Sr-2(Q(T))(6)] have been determined. The compound [Sr(Q(T))(2)(moeH)(2)](2) contains an eight-co-ordinate Sr atom in a square antiprismatic environment, due two bidentate chelating Q donors and two bidentate 2-methoxyethanol ligands. The compound (imH(2))(2)[Sr-2(Q(T))(6)] is composed of two imidazolium cations and a dianionic fragment [Sr-2(Q(T))(6)](2-), which is a centrosymmetric dimer containing four terminal and two bridging Q donor ligands.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
