30744-82-2Relevant academic research and scientific papers
Formation of hexacarbonylmanganese(I) salts, [Mn(CO)6] +X-, in anhydrous HP
Geier, Jens,Willner, Helge,Lehmann, Christian W.,Aubke, Friedhelm
, p. 7210 - 7214 (2008/10/09)
A convenient one-step synthesis for [Mn(CO)6]+ salts has been developed. The method involves the one-electron oxidation of Mn 2(CO)10 by protons in solutions of Lewis acids (BF 3, (CF3)3BCO) and anhydrous HF. The molecular structure of [Mn(CO)6][BF4]·SO2 was determined by single-crystal X-ray diffraction. Crystal data: orthorhombic, space group Cmc21, a = 8.7001(2) A, b = 11.8497(3) A, and c = 11.7437(3) A; Z = 4; R1 = 0.0320 and wR2 = 0.1106. The structural, NMR, and vibrational spectroscopic properties of [Mn(CO)6] + fit perfectly with those of the isoelectronic species (V(CO) 6]_, Cr(CO)6, and [Fe(CO)6] 2+.
Isolation and crystal structure of manganese(II) tetrafluoroborate: A unique example of manganese(II) with seven unidentate ligands
Cockman, Russell W.,Hoskins, Bernard F.,McCormick, Malcolm J.,O'Donnell, Thomas A.
, p. 2742 - 2745 (2008/10/08)
Crystalline manganese(II) tetrafluoroborate has been isolated as the ansolvate from a solution in anhydrous hydrogen fluoride. Its crystal structure provides the first instance of Mn(II) in a seven-coordinate environment of unidentate ligand atoms, each of which is derived as a terminal fluorine atom from a BF4 group; the MnF7 coordination polyhedron is a monocapped trigonal prism. There are two types of tetrahedral BF4 groups, one bridging four manganese atoms through each of its fluorine atoms and the other bridging only three manganese atoms, giving the formula Mn(BF4)4/4(BF4)3/3. Crystals of Mn(BF4)2 are orthorhombic with the space group Pnma, Z = 4, and unit cell dimensions a = 8.6042 (9) ?, b = 5.4496 (4) ?, and c = 10.8673 (9) ?. The structure was refined by a full-matrix least-squares method from 491 statistically significant reflections.
