Application of 12150-46-8, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 12150-46-8, C34H28FeP2. A document type is Article, introducing its new discovery.
[NH4]2[MoS4] reacts with CuBr and [Bu4N]Br in the solid state to afford an intermediate product with proposed constitution [Bu4N]4[MoS4Cu6Br8] (1). Treatment of cluster (1) with an equal equivalent of dppf in CH3CN-DMF solution resulted in the formation of a pentanuclear cluster [MoS4(Cudppf)2]·2DMF·CH3CN (2). Cluster (2) crystallizes in the monoclinic space group P21/n with four formula units in a cell of dimensions a = 13.1267(8), b = 38.040(2), c = 15.2661(9) A, and beta = 97.6030(10). Refinement by full-matrix least-squares techniques gave final residuals R = 0.0567 and wR = 0.1679. The structure of (2) can be described as two (Cudppf)+ units linked through MoS42- to form a pentanuclear folding-ruler array. Reaction of (1) with excess Ph2PPy in CH3CN solution resulted in the formation of a trinuclear cluster [MoS4Cu2(Ph2PPy)4] (3). Cluster (3) crystallizes in the tetragonal space group I41/a with cell constants a = 17.427(6), b = 17.427(6), c = 21.344(5) A, and Z = 4. Final residuals R = 0.0337 and wR = 0.0616. The structure of (3) is built up from two Cu(Ph2PPy)2+ units bridged by a MoS42- ligand to form a trinuclear symmetrical linear molecule. Clusters (2) and (3) exhibit strong optical absorption (effective a2 = 1.6 × 10-9 m W-1 (2) and 1.2 × 10-9 m W-1 (3)) and optical self-defocusing effects (n2 = -1.35 × 10-17 m2 W-1 (2) and -6.84 × 10-17 m2 W-1 (3)), their limiting thresholds were determined to be 0.35 J cm-2 (2) and 0.65 J cm-2 (3), which are about four and two times, respectively, better than that of C60.
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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate