Synthesis and structure of [Mo2O4(acac)2thala]·3C2H5OH with thala=3-(2-thienyl)-dl-alanine as a third bridging ligand between two molybdenum atoms

Novel hydrogenmaleato molybdenum(V) complexes based on a dinuclear metal–metal bonded unit: syntheses and structural characterization of (PyH)3[Mo2O4Cl4(OOCCH CHCOOH)] and (PyH)3[Mo2O4Br4(OOCCH CHCOOH)] · CH3CN

“…1). [19] and [{Mo 2 O 4 (g 2 -mal) 2 } 2 (l 4 -mal)] 6À (mal ¼ malonate) [20], while the latter in [Mo 4 O 6 (OOCR) 6 Cl 2 ] [21] and in a series of high-nuclearity oxomolybdenum(V,VI) clusters [22]. [{Mo 2 O 4 (g 2 -mal) 2 } 2 (l 4 -mal)] 6À possesses another type of malonato ligands, apart from the l 4 -malonate whose two carboxylate moieties are both coordinated in l 2 -bis(monodentate) binding mode to two {Mo 2 O 4 } 2þ units, the remaining four malonates coordinate in a bidentate manner, each through two oxygen atoms from different carboxylate groups.…”

“…Calc. for C19 H 21 Cl 4 Mo 2 N 3 O 8 : C, 30.30; H, 2.81; Cl, 18.83; Mo, 25.48; N, 5.58. Found: C, 30.17; H, 3.01; Cl, 18.7; Mo, 25.2; N, 5.67.…”