The complexes trans-[PdEt 2 L 2 ] (L = PMe 3 or PEt 3 ) reacted with 4,4Ј-dibromobiphenyl, 4,4Ј-diiodobiphenyl, 1.4-diiodobenzene, di(4-bromophenyl) ether, di(4-chlorophenyl) sulfone, 9,10-dibromoanthracene and 4,4Ј-dibromooctafluorobiphenyl to give various bimetallic palladium() complexes with a bridging arylene or diarylene ligand, trans,trans-[L

Three isostructural lanthanide coordination polymers, [Ln(L) (3); L = trans-3-(3-pyridyl)acrylate, (3-py)-CH=CH-COO}, were prepared from HL, lanthanide nitrate, and NaOH in H 2 O by microwave heating. In all coordination polymers, the metal is bonded to eight oxygen atoms, and all pyridyl nitrogen atoms do not coordinate to the metals. All polymers have a 1-D loop-connected chain structure. The hydrogen atoms in the aqua ligands and lattice water molecules all participate in the hydrogen bonds of the O-H···O or O-H···N type. The hydrogen bonds connect the 1-D chains to create a 2-D network. Polymer 1 exhibited red luminescence in the solid state at room temperature.

Two lanthanide complexes, [Ln(NO 3 ) 2 (H 2 O) 3 (L) 2 ](NO 3 )(H 2 O) {Ln = Eu (1), Tb (2); L = 2-(4-pyridylium)-ethanesulfonate, (4-pyH) + -CH 2 CH 2 -SO 3 -)}, were prepared from lanthanide nitrate and 4-pyridineethanesulfonic acid in H 2 O under microwave-heating conditions. Complexes 1 and 2 are isostructural, and the lanthanide metal in both complexes is coordinated to nine oxygen atoms. The pyridyl nitrogen in the ligand is protonated to give a zwitter ion that possesses an NH + (pyridyl) positive end and an SO 3 -negative end. All O−H and N−H hydrogen atoms participate in hydrogen bonds to generate a two-dimensional (complex 1) or a threedimensional network (complex 2). Complex 1 exhibits an intense red emission, whereas complex 2 exhibits an intense green emission in the solid state at room temperature.

Dinuclear Ni(II)-thiophene halides, which contain linear bridging thienylenes, trans,trans-[(PR 3 ) 2 (X)Ni-YNi(X)(PR 3 ) 2 ] {X = Cl, Br; H 2 Y = 5,5'-dichloro-2,2'-bithiophene (H 2 bth); H 2 tth = 5,5''-dichloro-2,2':5',2''-terthiophene (H 2 tth)} were prepared by the oxidative addition of dihalobithiophene (H 2 bth) or dihaloterthiophene (H 2 tth) to [Ni(COD) 2 ] in the presence of tertiary phosphines. Subsequent reactions of NaN 3 with the dinuclear Ni(II)-thiophene chlorides gave the corresponding Ni(II)-azido complexes, trans,trans-, whose reactivity toward trimethylsilyl pseudohalides such as trimethylsilyl isothiocyanates and cyanides was investigated. In addition, the reaction of trans-[BrNi(PEt 3 ) 2 -C 4 H 2 S-C 4 H 2 S-CHO], a thienyl Ni(II) complex containing a terminal aldehyde group, with phosphonium ylide was examined.