A diethynylxanthene unit is used to tether cyclometallated Pt(ii) and Au(iii) complexes in a geometry that favours interfacial interactions. This leads to protection from non-radiative decay pathways in the Au2 dimer and to low-energy 'aggregate-like' emission in a closely related Pt2 dimer, whilst rapid Au-to-Pt energy transfer occurs in the heterodimer.

Citation for published item:wu£ nozEodr¡ %guezD F nd fu£ nuelD iF nd puentesD xF nd illimsD tFeFqF nd g¡ rdensD hFtF @PHISA 9e heterotrimetlli sr@sssAD eu@sssA nd t@ssA omplex inorporting ylometllting iE nd tridentte lignds X simultneous emission from di'erent luminesent metl entres leds to rodEnd light emissionF9D hlton trnstionsFD RR @IVAF ppF VQWREVRHSF Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Di-and tri-nuclear metal complexes incorporating gold(III), iridium(III) and platinum(II) units linked via a 1,3,5-triethynylbenzene core are reported, together with the corresponding mononuclear complexes as models. The gold(III) and platinum(II) units comprise tridentate, cyclometallating, C^N^C and N^N^C-coordinating ligands respectively, with the Ar-C≡C-directly bound to the metal at the fourth coordination site. The iridium moiety is an Ir(ppy) 2 (acac) unit bound to the triethynylbenzene through a phenyl substituent at the 3-position of the acac ligand. The multinuclear compounds are prepared using a modular synthetic strategy from the monometallic complexes. All of the compounds are luminescent in solution at room temperature, and their photophysical properties have been studied. The triplet excited state energies of the mononuclear complexes lie in the order Au > Ir > Pt. Consistent with this order, energy transfer from Au to Ir and from Au to Pt is observed, leading to quenching of the Au emission in the gold-containing multinuclear complexes. Energy transfer from Ir to Pt occurs at a rate that only partially quenches the Ir-based emission. As a result, the dinuclear Ir-Pt and trinuclear Au-Ir-Pt complexes display broad emission across most of the visible region of the spectrum.

Pd-catalyzed dicyclization of 6-ene-1,11-diynes with bis(pinacolato)diboron affords synthetically useful allylboronates under smooth conditions. Two new C-C and one C-B bonds are stereospecifically formed in a single operation. The stereochemical outcome depends on the starting alkene configuration. The reaction is general and has been applied to differently substituted enediynes. Isolation of intermediate 1,3-dienes suggests a regioselective beta-hydrogen elimination along the reaction pathway.

Cardiogenic shock (CS) is associated with a high in-hospital mortality despite the achieved advances in diagnosis and management. Invasive mechanical ventilation and circulatory support constitute the highest step in cardiogenic shock therapy. Once established, taking the decision of weaning from such support is challenging. Intensive care unit (ICU) bedside echocardiography provides noninvasive, immediate, and low-cost monitoring of hemodynamic parameters such as cardiac output, filling pressure, structural disease, congestion status, and device functioning. Supplemented by an ultrasound of the lung and diaphragm, it is able to provide valuable information about signs suggesting a weaning failure. The aim of this article was to review the state of the art taking into account current evidence and knowledge on ICU bedside ultrasound for the evaluation of weaning from mechanical ventilation and circulatory support in cardiogenic shock.

Cyclopentane derivatives Q 0030Pd-Catalyzed Borylative Polycyclization of Enediynes to Allylboronates. -The cascade reaction generates two C-C and one C-B bonds stereoselectively in one step. The relative stereochemistry of the products depends on the (Z)-or (E)-configuration of the substrate. The reaction is general and can be applied to terminal alkyne substrates [cf. (VI) and (VIII)]. -(MARCO-MARTINEZ, J.; BUNUEL, E.; MUNOZ-RODRIGUEZ, R.; CARDENAS*, D.