Mixed multidentate linkers with donor groups of different types can be fruitfully exploited in the self-assembly coordination polymers (CPs) and Metal-Organic Frameworks (MOFs). In this work we develop new ligands containing a β-diketone chelating functionality, to better control stereochemistry at metal center, tetrazolyl bridging groups, combination not yet explored for networking ions. The l...

A binuclear tungsten(0) complex with an asymmetric bridging 1,2-diphosphole ligand was prepared by the photolysis of tungsten hexacarbonyl in presence 1-isopropyl-2-phenyl-1,2,5,6-tetrahydroacenaphtho [5,6-cd][1,2]diphosphole. The 1 characterized high resolution mass spectrometry, multinuclear NMR spectroscopy (1H, 13C, 31P), and elemental microanalysis. structure trans isomer resolved single c...

Transition-metal complexes capable of mediating multielectron transformations are critical components for a variety of small-molecule transformations. For example, the oxidation of C H bonds and the reduction of protons to H2 are both two-electron transformations. The oxidation of water to O2 is a four-electron process and the reduction of nitrogen to ammonia is an overall six-electron process....

Dinuclear ruthenium complex, with a bridging carbide and a hydride ligand, and methyltricyclohexylphosphonium chloride result from thermal decomposition of olefin metathesis catalyst, (IMesH2)(PCy3)(Cl)2Ru=CH2. Involvement of dissociated phosphine in the decomposition is proposed. The dinuclear complex has catalytic olefin isomerization activity, which can be responsible for competing isomeriza...

Pt···Pt···Pt interactions via their d(8) orbitals, combined with π-π stacking of deprotonated, chelating 2-(3'-pyrazolyl)pyridine (pyzpy) ligands, are responsible for trans-Pt(pyzpy)(2) (2) crystallization in a stack of three molecules unsupported by any bridging ligand.

Enantiomerically pure dinuclear ruthenium complexes with 1,2-dicarbonylhydrazide as a bridging ligand are optically active in the visible and near infrared spectral regions depending on the oxidation states of the metal centers and are useful as an electrochemically driven near infrared chiroptical switch.

A new series of solids with ligand-unsupported Au(I) chains with short Au...Au contacts were synthesized; as Ag compounds with the same structure are known, the new phases now allow unbiased comparison of Ag...Ag and Au...Au metallophilic bonds not supported by bridging ligands, which shows the latter to be consistently shorter by 0.03-0.04 A.

Dinitrogen (N2) complexes of technetium (99Tc) are rare, and only two examples have been reported. To complement this important class also for 99Tc, different pincer-type 99Tc were studied to assess their abilities coordinating dinitrogen. The reactions the 99TcIII complex [99TcCl3(PPh3)2(NCCH3)] with pincer ligands PNPtBu PyrPNPtBu respectively gave [99Tc(PNPtBu)Cl2] [99Tc(PyrPNPtBu)Cl3], firs...

In the title centrosymmetric dimeric Zn(II) complex, [Zn(2)(C(27)H(27)N(4)O)(2)(C(7)H(7)O)(2)], the Zn(II) center is coordinated by two N atoms and one O atom of the ketiminate ligand and two bridging O atoms of the benzyl-alkoxy groups. The geometry around the Zn(II) ions is distorted trigonal-bipyramidal.

Complexation of the bridging bidentate ligand N,N'-(pyridine-2,6-diyl)dinicotinamide, L with palladium(II) resulted in a single discrete M(2)L(4) self-assembly, 1, in a quantitative manner. The entropically-controlled assembly of 1 resulted in a rare saturated, quadruple-stranded metallo-helicate, in which both the left-handed (M) and right-handed (P) helicates exist in the crystal structure.