A photoresponsive single-handed double helical supramolecule composed of complementary strands bearing azobenzene moieties underwent a reversible trans-cis-isomerization regulated by photoirradiation, resulting in a change in its molecular length.

The six-coordinate Sn(IV) atom in the title compound, [SnCl(4)(C(14)H(14)OS)(2)], exists in a cis-SnCl(4)O(2) octa-hedral geometry. Of the four Cl atoms, two are close to adjacent S atoms [Cl⋯S = 3.320 (1) and 3.376 (1) Å]; the Sn-Cl bonds involving these two Cl atoms are longer than the other two Sn-Cl bonds.

A new diphosphine ligand assembled on the cyclotriphosphazene platform forms linear chelate and dimetallic bridged complexes with Au(I) and a cis-chelate complex with Pt(II).

In the crystal structure of title compound, [NiCl(2)(C(14)H(32)P(2))], the Ni(II) atom lies on a twofold rotation axis and shows a slightly distorted square-planar coordination geometry, with a dihedral angle of 10.01 (8)° between the cis-Cl-Ni-Cl and cis-P-Ni-P planes. There is no significant inter-molecular inter-action except very weak C-H⋯Cl inter-actions. The crystal studied was a racemic ...

In the title complex, [Ni(C(11)H(9)ClN(3)O(2))(2)]·4H(2)O, the Ni atom is coordinated by four N atoms and two O atoms derived from two tridentate 3-chloro-6-(3,5-dimethyl-1H-pyrazol-1-yl)picolinate ligands. The cis-N(4)O(2) donor set defines a distorted octa-hedral geometry. In the crystal structure, the complex and water mol-ecules are linked by O-H⋯O hydrogen bonds.

In the light of the recognized anticancer properties of cisplatin-type inorganic systems, the exact knowledge of their conformational preferences is of the utmost importance for understanding their biological activity. The present study reports the use of theoretical (quantum mechanical) calculations for achieving this goal. An alternative calculation method to the use of the AE basis sets, bot...

The Ru(II) atom in the title compound, [RuCl(2)(C(31)H(29)N(2)P)(CO)(2)]·CH(2)Cl(2), exhibits a distorted octahedral coordination environment. The bond angles of the cis substituents at the Ru(II) atom range from 82.72 (9) to 97.20 (3)°. This mol-ecule is of inter-est in the field of catalytic transfer hydrogenation.

In the title compound, [Ni(C(12)H(6)O(4))(C(10)H(14)N(4))(H(2)O)](n), the coordination polyhedron around each Ni(II) atom is a distorted cis-NiN(2)O(4) octa-hedron. The naphthalene-1,4-dicarboxyl-ate and 1,1'-(butane-1,4-di-yl)diimidazole ligands bridge the Ni centres to form a two-dimensional (4,4)-network, and O-H⋯O hydrogen bonds complete the structure.

Many Ru and Os systems display photoactive (3)MLCT states. Systems activated by therapeutic window light in the absence of O(2) remain elusive. [(bpy)(2)Os(dpp)RhCl(2)(phen)](3+) photobinds and photocleaves DNA under red light in an oxygen independent manner, due to molecular design involving one Os chromophore coupled to a photoactive cis-Rh(III)Cl(2) moiety.

Role of the protein overexpression is very important in the pathogenesis, diagnosis and prognosis of neoplasia. Cases of overexpression of p53 and Ki67 proteins were investigated in 19 ocular squamous cell carcinomas (OSCC) in dairy cows. Microscopically, insix cases the tumors were carcinoma in situ (noninvasive carcinoma, G0), and in the remaining 13 cases the tumors were invasive carcinoma. ...