Dalton Transactions

doi: 10.1039/D2DT90148Jpmid: N/A

doi: 10.1039/D2DT90149Hpmid: N/A

doi: 10.1039/D2DT90150Apmid: N/A

Dey, Bijoy; Chandrasekhar, Vadapalli

doi: 10.1039/d2dt01967apmid: 36040413

Spin crossover (SCO) is one of the most studied magnetic bistable phenomena because of its application in the field of multifunctional magnetic materials. FeII complexes in a N6 coordination environment have been the most well-studied in terms of their SCO behaviour. Other coordination environments, notably the N4O2 coordination environment, has also been quite effective in inducing SCO behaviour in the corresponding FeII complexes. This review deals with such systems. The three ligand families that are discussed are: Jager type ligands, hydrazone based ligands and tridentate ligands having salicylaldehyde derivatives. These ligands allow the assembly of both mononuclear and multinuclear complexes that exhibit cooperative spin transitions. Also, FeII complexes obtained from some of these ligands are multifunctional and exhibit a coupling of optical and magnetic properties. Most of the FeII complexes obtained from these families of ligands are charge neutral which allows easy surface deposition. Further, modulation of these ligand families allows a fine tuning of the ligand field strength which results in varying SCO behavior. In addition some of the FeII complexes derived from these ligands exhibit a light induced excited spin state trapping (LIESST) effect. All of the above aspects are reviewed in this review.

Scalambra, Franco; Daz-Ortega, Ismael Francisco; Romerosa, Antonio

doi: 10.1039/d2dt01870epmid: 36069303

Multiple and different metals in a complex can accomplish single and sequential multi-step reactions, providing valuable procedures to obtain chemicals in one-pot synthetic routes. Biology has shown how cooperative catalysis is a powerful method for the synthesis of complicated molecules. One of the most attractive targets for current chemists is the synthesis of H2 by a simple and economical procedure, mainly if it is produced from water using visible light as the energy source. This review aims to show how heterometallic complexes have been recently used to catalyze the photochemical production of H2.

Qian, Mao; Tang, Yakun; Liu, Lang; Zhang, Yue; Gao, Yang; Li, Xiaohui; Liu, Ting

doi: 10.1039/d2dt02395dpmid: 36094500

One-dimensional nanohybrids Li2MTi3O8/CNTs (M = Mn, Co, Zn), i.e., Li2MTi3O8 nanoparticles embedded in carbon nanotubes, were synthesized by following a combination of methods involving solgels, solid phase grinding and calcination. As anodes for lithium-ion batteries, Li2MTi3O8/CNTs (especially Li2CoTi3O8/CNTs) exhibited superior electrochemical performance.

Hou, Ying; Li, Hongyi; Wu, Hongping; Yu, Hongwei; Hu, Zhanggui; Wang, Jiyang; Wu, Yicheng

doi: 10.1039/d2dt02085hpmid: 36101974

The introduction of the transition metal cations with d0 electron configurations and F in the iodate systems generates a new polar compound, Ba2[WO3F(IO3)][WO3F2], which features the first example of a direct WOI bond in the structure. It exhibits excellent properties, including a large second harmonic generation response (3.5 KH2PO4), a wide visible and mid-infrared transparency region (0.2810.74 m), and a moderate birefringence of 0.061@532 nm.

Habashy, Danira A.; Khaled, Rabaa M.; Ahmed, Amr Y.; Radacki, Krzysztof; Ahmed, Salma K.; Tharwat, Engy K.; Magdy, Hana; Zeinhom, Alaa; Mansour, Ahmed M.

doi: 10.1039/d2dt01938hpmid: 36106589

The cytotoxicity of two tricarbonyl Mn(i) complexes of the general formula fac-[MnBr(CO)3L] (L = quinoline-2-carboxaldehyde (A) and 8-amino quinoline (B)) towards triple negative breast cancer (MDA-MB-231) was reported. Complexes A and B released CO when exposed to 468 nm light. Compound B has a dose-dependent cytotoxicity, with half maximal inhibitory concentration values of 19.62 M and 11.43 M before and after illumination, respectively. Co-treatment of MDA-MB-231 with paclitaxel (30 nM) and complex B (10 M) resulted in a 50% reduction in cell viability.

Miao, Linkun; Yeganeh-Salman, Amir; Yeung, Jason; Stephan, Douglas W.

doi: 10.1039/d2dt02855gpmid: 36106951

Efforts to deprotonate the halophosphonium cations [Ph2P(X)Me]+ (X = F, Cl) generated species of the form [Ph2(X)PC(H)PPh2Me][X]. The derivative where X = O3SCF3 provides access to a methylene phosphonium cation. The coordinated triflate anion can be replaced by Et3PO and dimethylaminopyridine (DMAP). In addition, the cation reacts with the olefins R2CCH2 (R = Ph, Me) and PhMeCCH2. While Ph2CCH2 was shown to give the species [Ph2(Ph2CCH)PCH2PPh2Me][O3SCF3]2 with a pendant vinyl group, reactions with methyl substituted olefins undergo additional isomerization to form [Ph2(RCH2CCH2)PCH2PPh2Me][O3SCF3]2 (R = Ph, Me) featuring pendant allyl moieties.

Lian, Yu-Xiang; Liu, Shan-Shan; Sun, Jun-Jun; Luo, Peng; Dong, Xi-Yan; Liu, Xiao-Fei; Zang, Shuang-Quan

doi: 10.1039/d2dt02569hpmid: 36106962

Introducing sulfonic acid groups into MOF materials is one of the effective approaches to enhance proton conduction. Here, we attempted to prepare a new post-modified ZIF-90-based material by addition reaction of the aldehyde group with bisulfite to obtain partially functionalized ZIF-90-SO3Na(2.3). ZIF-90-SO3Na(2.3) exhibits a high proton conductivity of 2.26 102 S cm1 at 98% RH and 100 C.