The structure of the compound {[Ph2(O)POCH2C(pz)3Ag]2(THF)2}(BF4)2 (pz = pyrazolyl ring) revealed a new coordination mode for the tris(pyrazolyl)methane donor set: two pyrazolyl rings bridging the same two silvers atoms using normal -type orbitals on the nitrogen donor atoms while the third pyrazolyl ring coordinates side-on to one of the silver atoms with a nitrogen-based -type orbital. The dimeric arrangement is also supported by a weak silver-silver

The 2,6-py(CH2-pz)2 ligand was used to prepare metal complexes as follows: [py(CH2pz)2](BiI3), {Ag[py(CH2pz)2](OTf)·CH3CN}, {PtCl[py(CH2pz)2]}(BF4), {Cd[py(CH2pz)2]2}(BF4)2·[4,4'-bipy]·0.5H2O, and {Cd[phen]3}2(BF4)4·[py(CH2pz)2]·5H2O (py = pyridyl, pz = pyrazolyl, and phen = 1,10-phenanthroline). The solid state structures of each complex show that all five compounds are organized by noncovalent forces into complex extended structures. Each

The bitopic ligand p-C6H4[CH2OCH2C(pz)3]2 (pz = pyrazolyl ring) that contains two tris(pyrazolyl)methane units connected by a semi-rigid organic spacer reacts with silver(I) salts to yield {p-C6H4[CH2OCH2C(pz)3]2(AgX)2}n, where X = CF3SO3- (1), SbF6- (2), PF6- (3), BF4- (4) and NO3-(5). Their primary, secondary, tertiary and quaternary structures are discussed, as a function of counter-ion and solvent

The tripodal ligand 1,3,5-(CH3)3C6[CH2OCH2C(pz)3]3 (L1, pz = pyrazolyl ring) reacts with AgBF4 to yield {[L12Ag3(CH3CN)](BF4)3}·(CH3CN)4, an inclusion complex in which the encapsulated acetonitrile cannot escape the triangular cage unit in either the solid or solution phase. The analogous hexatopic ligand C6[CH2OCH2C(pz)3]6 forms a 2-dimensional polymer composed of similar triangular cage units, again with the encapsulation of one acetonitrile molecule,

Methylmercury(II) xanthates, MeHgS(S)COR, with R=Et, iPr and CH2Ph, form unidimensional, supramolecular self-assembled, tape-like arrays in the solid state, based upon Hg···S intermolecular secondary interactions. In the compounds with R=Et and iPr the individual molecules form double chains (tapes) weakly interacting with neighbouring arrays, while the compound with R=CH2Ph forms dimeric units, which are further associated into infinite tapes,

The new ligand o-C6H4[CH2OCH2C(3-Phpz)3]2 (pz=pyrazolyl ring) reacts with AgBF4 to yield the coordination polymer {o-C6H4[CH2OCH2C(3-Phpz)3]2Ag2(BF4)2}n. The organometallic supramolecular architecture contains two different types of silver(I) cations arranged in bimetallic units forming a 1D coordination polymer. The bimetallic units show three different types of bridging interactions, including a mu-kappa1-kappa2 tris(3-Ph-pyrazolyl)methane unit,

The new ligands C6H4[CH2OCH2C(pz)3]2 [pz = pyrazolyl ring), 1 (ortho), 2 (meta), and 3 (para), that can potentially bond two or more metal centers were obtained in a single step from the reaction of the appropriate dibromoxylene, 2 equiv of tris-2,2,2-(1-pyrazolyl)ethanol and excess NaH. Although the arrangement of the tris(pyrazolyl)methane units in the solid-state structures of 1 and 3 are similar, the orientation of these groups with respect to

The coordination polymer {p-C6H4[CH2OCH2C(pz)3]2(AgSbF6)2}n crystallizes into two supramolecular structures, solvent depended, one organized into a 3D structure of argentamacrocycles stacked in a tubular network connected by helically oriented organic spacers and the other into argentachains arranged in a 2D sheet structure.

A series of manganese carbonyl complexes have been prepared by reaction of the tris(pyrazolyl)methane ligands with 'Mn(CO)5 ', prepared 'in situ' from the reaction of Mn(CO)5Br and AgBF4 or AgOTf in refluxing acetone. In the solid state structures of all four complexes, the environment around the manganese atom is a slightly distorted octahedron, with the distortion caused by the restricted bite angle of the facial coordinated tris(pyrazolyl)methane