Search results for "Ordination"
showing 10 items of 1367 documents
Ferromagnetic copper(II)–copper(II) interaction in a single chlorido and dicyanamido bridged mixed–valence copper(I/II) 2D polymer generated by in si…
2015
A mixed-valence 2-D Cu(I/II) complex, [{Cu(II)(dmen)(μ-Cl)(μ1,5-dca)}{Cu(I)(μ1,5-dca)}]n (1) (dmen = N,N-dimethylethylenediamine, dca = dicyanamide = [N(CN)2]−), has been synthesized by in situ partial reduction of Cu(II) to Cu(I) using benzoin (2-hydroxy-1,2-di(phenyl)ethanone) as reductant. Complex 1 was characterized by spectroscopic techniques, single crystal X-ray diffraction, and low temperature magnetic measurements. Structural investigation reveals that 1 represents a mixed-valence 2-D coordination polymer formed by parallel 1-D [Cu(II)(dmen)(Cl)Cu(I)(μ1,5-dca)2]n chains running along the b axis, where chloride bridges Cu(II) ions of adjacent polymers through long connections (2.840…
s-Block metal scorpionates – A new sodium hydrido-tris(3,5-dimethyl-1-pyrazolyl)borate salt showing an unusual core stabilized by bridging and termin…
2020
Abstract Dissolution of [(μ-Me2CO)3(NaTp*)2] (1) (Tp* = hydrido-tris(3,5-dimethyl-1-pyrazolyl)borate) in DMSO at room temperature leads to the growth of colourless crystals characterized as the new salt [Na2Tp*(μ-Me2SO)3(Me2SO)3] [NaTp* 2] (2). 2 crystallized in the trigonal space group R3 with Z = 3, a = 14.1227(2) Å, b = 14.1227(10) Å, c = 33.9685(2) Å, and V = 5867.35(17) Å3. Interestingly, anion and cation of 2 both contain the Tp* ligand. Moreover, the cationic moiety highlights an unusual sodium atom hexacoordinated by six DMSO molecules acting as O-bonded ligands. Three of which exhibit a bridging coordination mode and three are in terminal position. To the best of our knowledge, the…
Dioxomolybdenum(VI) and -tungsten(VI) complexes with tetradentate aminobis(phenol)s
2006
Abstract Aminobis(phenol) ligands (H2Ln) carrying either a dimethylamino, a pyridyl or a methoxy sidearm donor were used in the preparation of new tungsten and molybdenum complexes. Treatment of [W(eg)3] (eg = 1,2-ethanediolate dianion) with H2Ln under hydrolytic conditions in a CHCl3–MeOH mixture gave the cis-dioxotungsten(VI) complexes [WO2(Ln)] in good yields. The corresponding molybdenum complexes [MoO2(Ln)] were prepared from [MoO2(acac)2] and respective ligands. The solid-state structures of two molybdenum and one tungsten compounds were determined by single crystal X-ray diffraction, which revealed that the dianionic aminobis(phenolate) backbones of the ligands have coordinated to th…
Rational design and modelling of f-block molecular nanomagnets
2016
Los imanes monomoleculares o moléculas imán, por sus siglas en inglés SMMs, han suscitado una gran atención en los últimos años debido a sus extraordinarias propiedades físicas. Los cristales de este tipo de moléculas se caracterizan por presentar relajación lenta de la magnetización a baja temperatura, así como curvas de histeresis magnética. Estas moléculas se encuentran entre las entidades con comportamiento magnético más complejas, mostrando fenómenos cuánticos tales como efecto túnel en la magnetización, coherencia cuántica o interferencia cuántica. Por esto, se han postulado como candidatos prometedores para el diseño de bits cuánticos (qubits) de espín en computación cuántica. La pri…
Coordinate compounding in English and Spanish
2011
Coordinate compounding is a process which has been only sporadically considered in wordformation studies on Germanic and Romance languages. In this paper, we compare the situation in English with that in Spanish as far as formal structure and semantics are concerned. To this end, an operational definition of coordinate compounding is first provided, after which a semantic classification of coordinate compounds is developed. For each type, variants are discussed, representative examples are provided, and similarities and dissimilarities between the two languages are highlighted. We finish by raising the issues of recursiveness and productivity in coordinate compounding and we examine the pos…
Coordination Polymers
2018
Este documento ha sido elaborado en el marco de un proyecto de Renovación de Metodologías Docentes concedido por el servicio de Formación Permanente de la Universitat de Valencia (UV-SFPIE_RMD17-725369) Este documento forma parte de la asignatura Química Inorgánica Avanzada impartida en el Máster Universitario en Química This document is part of the course Advanced Inorganic Chemistry belonging to the Master in Chemistry
La ratification en trompe-l'il du TSCG en France
2013
International audience
Agencification and location: Does agency site matter?
2011
Published version of an article published in Public Organization Review, 11(2), 97-108. Also available from the publisher at http://dx.doi.org/10.1007/s11115-010-0113-8 Two decades of New Public Management have placed agencifiction high on the agenda of administrative policy-makers. However, agencification (and de-agencification) has been one of the enduring themes of public administration. Agencies organized at arm's length from ministerial departments have fairly often been located outside of the capital or political centre. Although practitioners tend to assign some weight to central versus peripheral location as regards political-administrative behavior, this relationship has been almos…
New alkoxo-bridged mixed-valence cobalt clusters: Synthesis, crystal structures and magnetic properties
2008
Two new Co II /Co III complexes, [{Co II Co III (mea) 3 } 2 (bpe) 3 ](ClO 4 ) 4 · 1.5CH 3 OH · 1.5H 2 O ( 1 ) and [ Co 4 II Co 3 III ( dea ) 6 ( CH 3 COO ) 3 ] ( ClO 4 ) 0.75 ( CH 3 COO ) 1.25 · 0.5 H 2 O ( 2 ) [Hmea = monoethanolamine H 2 dea = diethanolamine and bpe = 1,2-bis(4-pyridyl)ethane], have been obtained by reacting cobalt(II) perchlorate ( 1 and 2 ), Hmea ( 1 )/H 2 dea ( 2 ), bpe ( 1 ) and sodium acetate ( 2 ). The crystal structures of 1 and 2 have been solved by single crystal X-ray diffraction. Crystal 1 contains “Chinese lantern”-like shaped cations, resulting by connecting two {Co II Co III (mea) 3 } moieties with three flexible bpe ligands. The coordination sphere of the …
Developmental Coordination Disorder, Historical Beginnings and Development
2015
<p><em>This article contains theoretical analysis about Developmental Coordination Disorder historical evolution. Studies include a wide variation in terminology and criteria to describe . Developmental Coordination Disorder. Developmental Coordination Disorder is a complex neurological condition, which affects muscle coordination and perception.</em></p>