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. 499-40-1, C12H22O11. A document type is Article, introducing its new discovery., SDS of cas: 499-40-1
Polynuclear paddle-wheel copper(II) propionate with di-2-pyridylamine or 1,10-phenanthroline: Preparation, characterization and X-ray structure
The synthesis, spectroscopic, magnetic and structural characterization of two new polynuclear copper(II) propionate are described. Both compounds exhibit the typical paddle-wheel type structure. The complex [Cu4(dpyam)2(OCOC2H5)2(mu-O2CC2H5)6(H2O)2][Cu2(mu- O2CC2H5)4(H2O)2] ¡¤ (DMF)2 1; where dpyam = di-2-pyridylamine, the “outer” Cu ions, with a CuN2O2O? chromophore, have an intermediate five-coordinate geometry. The “inner” Cu ions, with a CuO4O? chromophore, have a square pyramidal geometry. The two Cu(II) ions in the inner unit are bridged by four syn,syn-eta1:eta1:mu propionates, showing the paddle-wheel cage type. The “outer” and “inner” linked by propionate bridges showing syn,anti-eta1:eta1:mu coordination mode. The 1D structure of complex [Cu6(phen)2(H2O)2(mu-O2CC2H5)12]n[Cu2(mu-O2CC2H5)4(H2O)2]2n ¡¤ (H2O)0.5n 2; where phen = 1,10-phenanthroline, consists of zig-zag chains of mononuclear Cu(mu-O2CC2H5)2(H2O)(phen) repeating units running along the b-axis, which are connected along the unit cell diagonal via Cu2(mu-O2CC2H5)4 paddle-wheel dinuclear units. Within mononuclear and dinuclear units, the Cu(II) ions have a square pyramidal geometry. However, the outer sphere of both compounds consists of the Cu2(mu-O2CC2H5)4(H2O)2 paddle-wheel molecule in which Cu(II) ions involve a square pyramidal geometry.
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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics