Cu(II)-Ln(III) (Ln = Gd, Tb and Dy) complexes of an unsymmetrical NO donor ligand: field induced SMM behaviour of Cu(II)-Tb(III) complexes.

Three new hetero-metallic Cu-Ln complexes [(CuL)Gd(NO)(CHOH)] (1), [(CuL)Tb(NO)(HO)]·[CuL] (2) and [(CuL)Dy(NO)(HO)]·[CuL] (3) have been synthesized using a mono-nuclear Cu(II) complex, [CuL], of an unsymmetrically di-condensed NO donor Schiff base ligand, -(3-methoxysalicylidene)--(salicylidene)-1,2-ethylenediamine (HL). Single crystal X-ray crystallography revealed that complex 1 is a nitrate bridged 1D chain of dinuclear Cu(II)-Gd(III) units whereas in 2 and 3, the dinuclear Cu(II)-Ln(III) units are co-crystallized with a [CuL] unit. The Ln(III) centers are nine coordinated with the geometry of a spherical capped square antiprism for Gd and spherical tricapped trigonal prism for Tb and Dy.

Patterns and Management of Unprovoked Bull Attack Injuries: A Retrospective Case Series.

Introduction Animal attacks cause a considerable number of injuries and lead to morbidity and mortality among children and adults. Bull gore injuries following bullfighting and other provoked attacks have been frequently described in literature. Our study describes the pattern of injuries and the unique mechanisms and management of blunt and penetrating trauma associated with unprovoked bull attacks.

Role of Redox-Inactive Metal Ions in Modulating the Reduction Potential of Uranyl Schiff Base Complexes: Detailed Experimental and Theoretical Studies.

A mononuclear uranyl complex, [UOL] (), has been synthesized with the ligand ,'-bis(3-methoxy-2-hydroxybenzylidene)-1,6-diamino-3-azahexane (HL). The complex showed a reversible U(VI)/U(V) redox couple in cyclic voltammetric measurements. The reduction potential of this couple showed a positive shift upon the addition of redox-inactive alkali- and alkaline-earth Lewis acidic metal ions (Li, Na, K, Ca, Sr, and Ba) to an acetonitrile solution of complex .

Quality of Life of Patients With Major Amputations in the Tertiary Care Center of Western Rajasthan: A Prospective Observational Study in 2019-2020.

Introduction Amputation of a limb is a loss of physical integrity that has disastrous consequences for a person's mental, physical, and social well-being. Aim We aim to analyze the quality of life (QoL) after major amputations and long-term outcomes. Method and materials A prospective, observational study has been conducted in a health care institute in western Rajasthan from January 2019 to July 2020.

COVID-19 associated rhino-orbital-cerebral mucormycosis: An observational study from Eastern India, with special emphasis on neurological spectrum.

Aims: 1: Describe the epidemiology and determine risk factors for COVID-19 associated mucormycosis. 2: Elaborate the clinical spectrum of Rhino-Orbital-Cerebral Mucormycosis (ROCM), pattern of neuroaxis involvement and it's radiological correlates.

Methods: Observational study.

Synthesis of Ni(ii)-Mn(ii) complexes using a new mononuclear Ni(ii) complex of an unsymmetrical NO donor ligand: structures, magnetic properties and catalytic oxidase activity.

A new Ni(ii) complex [NiL] (complex 1) of an asymmetrically di-condensed NO donor Schiff base ligand, N-salicylidene-N'-3-methoxysalicylidene-1,3-propanediamine (HL), has been synthesized and utilized for the synthesis of three heterometallic complexes, [(NiL)Mn(NCS)(CHOH)]·CHOH (2) [(NiL)Mn(N(CN))(CHOH)]·CHOH (3) and [(NiL)Mn(N)(μ-N)(CHOH)] (4). Single crystal X-ray diffraction analyses show that complexes 2 and 3 have linear trinuclear structures where two tridentate O donor (NiL) units are coordinated to the central octahedral Mn(ii) centre, whereas complex 4 has a centrosymmetric tetranuclear structure where two binuclear (NiL)Mn units are linked via two phenoxido and two μ-N bridges. Among the heterometallic complexes (2-4), only 4 is active towards the catalytic oxidation of 3,5-di-tert-butylcatechol to the corresponding quinone.

Family of Isomeric Cu-Ln (Ln = Gd, Tb, and Dy) Complexes Presenting Field-Induced Slow Relaxation of Magnetization Only for the Members Containing Gd.

The strategic design and synthesis of two isomeric Cu complexes, [CuL] and [CuL], of asymmetrically dicondensed NO-donor Schiff-base ligands (where HL and HL are -salicylidene-'-3-methoxysalicylidenepropane-1,2-diamine and -3-methoxysalicylidene-'-salicylidenepropane-1,2-diamine, respectively) have been accomplished via a convenient Cu template method. These two complexes have been used as metalloligands for the synthesis of three pairs of Cu-Ln isomeric complexes [CuL(μ-NO)Ln(NO)(HO)]·CHCN (for complexes -, L = L, and for complexes -, L = L and Ln = Gd, Tb, and Dy, respectively), all of which have been characterized structurally. In all six isomorphous and isostructural complexes, the decacoordinated Ln centers and pentacoordinated Cu centers possess sphenocorona and square-pyramidal geometries, respectively.

The role of 3d-4f exchange interaction in SMM behaviour and magnetic refrigeration of carbonato bridged CuLn (Ln = Dy, Tb and Gd) complexes of an unsymmetrical NO donor ligand.

The strategic design and synthesis of a new Cu(ii) complex, [CuL] (1) of an asymmetrically dicondensed N2O4 donor ligand (where H2L = N-3-ethoxysalicylidene-N'-3-methoxysalicylidene-1,3-propanediamine) and its utilization as a metalloligand towards the synthesis of three new tetra-nuclear carbonato bridged Cu-Ln complexes [(μ4-CO3)2{(CuL)(MeOH)Ln(NO3)}2] (where Ln = Dy, Tb and Gd for complexes 2, 3 and 4 respectively) have been achieved. Each tetranuclear CuII2LnIII2 structure can be described as two μ2-phenoxo bridged CuIILnIII dinuclear units connected via two μ4-κ2:η1:η1CO32-. Single crystal X-ray diffraction studies show that complexes 2, 3 and 4 are isostructural and isomorphic.

Elucidating the secondary effect in the Lewis acid mediated anodic shift of electrochemical oxidation of a Cu(ii) complex with a NO donor unsymmetrical ligand.

A metalloligand [CuL] (H2L = N-α-methylsalicylidene-N'-salicylidene-1,3-propanediamine) was reacted with a series (Li+, Na+, K+, Mg2+, Ca2+, Zn2+, Cd2+, Pr3+, Nd3+ and Sm3+) of redox-inactive metal ions (in excess) with different Lewis acidities in acetonitrile to form heterometallic complexes in situ. In the cases of K+ and Zn2+, single crystals were isolated from their respective solutions and solved. The complexes were found to be trinuclear with the phenoxido bridge between the redox-inactive metals and the copper center having closest equilibrium distance.

The catalytic activities and magnetic behaviours of rare μ-chlorido and μ-azido bridged defective dicubane tetranuclear Mn(ii) complexes.

Reaction of Mn(ii) salts with a flexidentate Mannich base ligand, N,N'-dimethyl-N,N'-bis(2-hydroxy-3-methoxy-5-methylbenzyl)ethylenediamine (H2L) in the presence of chloride or azide ions yielded two new tetranuclear complexes, [Mn4L2(μ3-Cl)2Cl2] (1) and [Mn4L2(μ1,1,1-N3)2(N3)2] (2). Single crystal X-ray structural analyses reveal that these two discrete tetranuclear Mn(ii) complexes possess defective dicubane cores with two μ3-Cl (for 1) or two μ1,1,1-N3 bridges (for 2). One of the triply bridging groups is situated above and the other one below the plane of the four Mn(ii) ions.