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The title complex, [Ag(C18H15P)4]BF4, was prepared by the reaction of silver(I) tetra­fluorido­borate and triphenyl­phosphane in the presence of 1,2-bis­(pyridin-2-yl)ethyl­ene. The AgI atom is tetra­hedrally coordinated by four P atoms from triphenyl­phosphane (PPh3) ligands. Due to symmetry, the tetra­fluorido­borate anion is disordered over three positions (each with one third occupancy). The tetra­fluorido­borate anion does not coordinate to the AgI atom.

C 54H44Cl2Cu2N2P2,m onoclinic, C12/c1(no. 15 Source of materialThe title compound was obtained by the reaction of CuCl and PPh 3 (molar ratio 1:1) in the presence of isoquinoline (1 ml) in the mixed solution of CH 3OH (5 ml) and CH2Cl2 (5 ml) for 4hours at ambient temperature. The insoluble residues were removed by filtration, and the filtrate was evaporated slowly at room temperature for about one week to yield yellow crystals. Crystals suitable for single crystal X-ray diffraction investigation were extracted directly from the sample as prepared.

Each Eu3+ ion in the title compound, catena-poly[europium(III)-tri-mu-4-methylbenzoato-O:O,O';O:O,O';O,O':O'], [[Eu(C8H7O2)3]3]n, is coordinated by nine O atoms, and three Eu atoms form a trimeric unit. These trimeric units are linked by bridging-chelating carboxylates to form an infinite one-dimensional polymer chain.

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