Evolution of ferromagnetic interactions from cluster spin glass state in Co–Ga alloy

One-step synthesis of polyethyleneimine-coated magnetite nanoparticles and their structural, magnetic and power absorption study

“…Considering a characteristic time of s 0 ¼ 10 À9 s, he obtained parameters from the experimental data t are T 0 $ 56 K and E a /k B $ 1760 K. According to what was reported by Yasin et al, when T 0 > 0 has a collection of interacting spins; meanwhile, when T 0 < 0 indicates a spin-glass system. 50 Besides that, in the absence of an applied low magnetic eld, E a is given by E a ¼ K eff V, where K eff is the effective magnetic anisotropy constant. Using the NPs size obtained from TEM data analysis, we estimated a K 1-eff ¼ 10 4 J m À3 for the lowtemperature peak.…”

Directed C−H Halogenation Reactions Catalysed by PdII Supported on Polymers under Batch and Continuous Flow Conditions

“…Polymer P1 was synthesised according to previously reported methods (Figure a) . The imidazolium chloride precursor 4 was prepared by means of a slightly modified reaction protocol in moderate yield from the known compound 3 .…”

Polystyrene‐supported Pd(II)–N‐heterocyclic carbene complex as a heterogeneous and recyclable precatalyst for cross‐coupling of acyl chlorides with arylboronic acids

“…PS‐NHC‐Pd(II) was synthesized from theophylline . The content of Pd(II) incorporated into the polymer matrix was determined using ICP analysis and was found to be 3.31 wt% (0.31 mmol g −1 ).…”

“…Ligand and catalyst were synthesized following a procedure reported in our previous work . This is briefly explained in the following paragraphs.…”

“…We have previously reported the efficient Heck–Matsuda cross‐coupling reaction in ethanol at room temperature using a reusable, heterogeneous, polystyrene resin‐supported Pd(II)–N‐heterocyclic carbene (NHC) complex derived from theophylline, namely PS‐NHC‐Pd(II) (Figure ) . In order to further establish other heterogeneous palladium‐catalysed C–C cross‐coupling reactions with our catalyst, we herein report the application of this catalyst in Suzuki–Miyaura cross‐coupling reactions of acid chlorides and arylboronic acids to yield aryl ketones.…”