Marchetti, F. published the artcileInfluence of sterically demanding groups on the structure and stability in the solid and solution state of (acylpyrazolonate)bis(phosphine)copper(I) derivatives, HPLC of Formula: 1691-93-6, the main research area is crystal structure copper acylpyrazolonato phosphine complex; copper acylpyrazolonate phosphine preparation structure reaction; pyrazolonate acyl copper phosphine preparation structure.
New neutral derivatives [Cu(L)(PR3)2] (LH = 1-phenyl-3-methyl-4-R1(C:O)-pyrazol-5-one, in detail L1H, R1 = C6H5; L2H, R1 = CH3; L3H, R1 = CF3; L4H, R1 = C6H11; L5H, R1 = C6H5CH2; L6H, R1 = Ph2CH; R = C6H5, p-CH3C6H4, C6H5CH2 or C6H11) and [Cu(L)2] (L = L4, L5 and L6) were synthesized and characterized by anal. and spectroscopic techniques. The x-ray crystal and mol. structures of [Cu(L1)(PCy3)2], [Cu(L5)(PPh3)2] and [Cu(L6)(PPh3)2] were resolved, in which the copper atom is found in a strongly distorted tetrahedral CuO2P2 environment. The interbond angles P-Cu-P, P-Cu-O and O-Cu-O are strongly influenced by the steric properties of PR3 and also to a lesser degree by the 4-acyl moiety of the L donor. [Cu(L)(PR3)2] undergo partial dissociation in chloroform solution through breaking of Cu-P and, when R = Cy, also of Cu-O bonds. [Cu(L4)(PPh3)2] reacts with 1-methylimidazoline-2-thione (Hmimt), with 1,10-phenanthroline (Phen), with 2,9-dimethyl-1,10-phenanthroline (Cupr) and with bis(diphenylphosphino)propane (DPPP), yielding the mixed-ligand compounds [Cu(PPh3)(Hmimt)3](L4), [Cu(L4)(PPh3)(Phen)], [Cu(Cupr)2](L4) and [Cu(DPPP)2](L4), resp.
Inorganica Chimica Acta published new progress about Bond angle, dihedral. 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, HPLC of Formula: 1691-93-6.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics