Uranyl complexes of a bis(methylterephthalamide) ligand (LH(4)) have been synthesized and characterized by X-ray crystallography. The structure is an unexpected [Me(4)N](8)[L(UO(2))](4) tetramer, formed via coordination of the two MeTAM units of L to two uranyl moieties. Addition of KOH to the tetramer gave the corresponding monomeric uranyl methoxide species [Me(4)N]K(2)[LUO(2)(OMe)].

Penta-ammine dioxide uranium(V) nitrate ammonia (1/1), [UO2(NH3)5]NO3·NH3, was obtained in the form of yellow crystals from the reaction of caesium uranyl nitrate, Cs[UO2(NO3)3], and uranium tetra-fluoride, UF4, in dry liquid ammonia. The [UO2]+ cation is coordinated by five ammine ligands. The resulting [UO2(NH3)5] coordination polyhedron is best described as a penta-gonal bipyramid with the O...

We report the synthesis and reactivity of 1,2,3-triazolin-5-imine type mesoionic imines (MIIs). The MIIs are accessible by a base-mediated cycloaddition between substituted acetonitrile an aromatic azide, methylation established routes subsequent deprotonation. C=O-stretching frequencies in MII-CO2 Rh(CO)2Cl complexes were used to determine overall donor strength. stronger donors than N-heteroc...

Herein, we report theoretical evidence of the geometric changes occurring upon complexation, for a series of octupolar bipyrimidine-based ligands incorporating the NPh2 terminal donor group. It is shown that ligands 1 and 2 (4,4',6,6'-tetrakis(N,N-diphenylaminostyryl)-[2,2']bipyrimidine and 4,4',6,6'-tetrakis((N,N-diphenyl)-9,9'-dioctyl-9H-fluorene-2-amine)-2,2'-bipyrimidine) exhibit a non-plan...

The asymmetric unit of the title compound, [Mo(C(14)H(12)NO)(2)O(2)], comprises half of the complex with the full mol-ecule generated by the application of twofold symmetry. The Mo(VI) atom is surrounded by two oxide O atoms and the two sets of N,O-donor atoms of the bidentate Schiff base ligands. The resulting N(2)O(4) donor set defines a distorted octa-hedral coordination geometry. Inter-mole...

The Zn(II) ion in the title complex, [Zn(NCS)(2)(C(7)H(6)N(2)S)(2)], is tetra-hedrally coordinated within an N(4) donor set defined by two N atoms of two terminal isothio-cyanate ligands and by two heterocyclic N atoms of two different 2-amino-benzothia-zole ligands. This arrangement is stabilized by intra-molecular N-H⋯N hydrogen bonds. In the crystal structure, mol-ecules are linked through N...

While the d(0) transition-metal POMs of Group V (V(5+), Nb(5+), Ta(5+)) and Group VI (Mo(6+), W(6+)) have been known for more than a century, the actinyl peroxide POMs, specifically those built of uranyl triperoxide or uranyl dihydroxidediperoxide polyhedra, were only realized within the last decade. While virtually every metal on the Periodic Table can form discrete clusters of some type, the ...

Single-base bulges in DNA are irregularities that may arise from replication errors or from recombination between imperfectly homologous sequences. Owing to their inherent thermodynamic instability, bulges are susceptible targets for small molecules and proteins with recognition capabilities. A number of ligands have been developed that can recognize adenine (A), guanine (G), or cytosine (C) at...

Abstract Series of linear tridentate PN Ph P R ‐ligands (R=Me, Et, Pln, Ph, Cyp, i Pr, Cy, t Bu) and molybdenum tricarbonyl complexes [Mo(CO) 3 ] (R=Ph, Cy,) were synthesized characterized using NMR‐, IR‐, Raman spectroscopy as well X‐ray crystallography. The influence the different phosphine donor groups ligands on bonding activation CO is investigated. Importantly, all are found to adopt a fa...