Marchetti, Fabio published the artcileA new family of ionic dinuclear strontium (imH2)2[Sr2(Q)6] compounds (imH = imidazole; QH = 1-phenyl-3-methyl-4-acylpyrazol-5-one), Safety of 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is strontium acylpyrazolonato imidazolium preparation structure; crystal structure strontium pivaloylpyrazolonato methoxyethanol imidazolium.
New neutral [Sr(Q)2(L)n]m or ionic (imH2)2[Sr2(Q)6] air stable complexes (QH = 1-phenyl-3-methyl-4-R(C:O)-pyrazol-5-one; in detail Q = QT for R = CH2CMe3, Q = QP for R = Ph and Q = QF 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) were synthesized and fully characterized. The x-ray crystal structures of [Sr(QT)2(moeH)2]2 and of (imH2)2[Sr2(QT)6] were determined [Sr(QT)2(moeH)2]2 contains an eight-coordinate Sr atom in a square antiprismatic environment, due two bidentate chelating Q donors and two bidentate 2-methoxyethanol ligands. The compound (imH2)2[Sr2(QT)6] is composed of two imidazolium cations and a dianionic fragment [Sr2(QT)6]2-, which is a centrosym. dimer containing four terminal and two bridging Q donor ligands.
Journal of the Chemical Society, Dalton Transactions published new progress about Crystal structure. 1691-93-6 belongs to class pyrazoles-derivatives, name is 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, and the molecular formula is C12H9F3N2O2, Safety of 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics