Manganese boryl complexes

Scheme 4 Synthesis of base-stabilized manganese boryl complexes 7.15 and 7.16...

Table 3 Selected spectroscopic and structural parameters for manganese and rhenium boryl complexes ...

Boryl complexes featuring the [Mn(CO)s] moiety were first reported as early as 1995, the manganese catecholboryl system (OC MnBcat (7.1, Fig. 11) having been synthesized by the reaction of ClBcat with Na[Mn(CO)s], and investigated in the functionalization of arenes and alkenes [55-57]. The Mn-B distance of 2.108(6) A measured for 7.1 is not particularly short, when compared to the sum of the respective covalent radii (2.01 A [11]). Moreover, the Mn-C distance for the carbonyl ligand trans to Beat [1.841(6) A] falls within the... 

Fig. 10 Limiting descriptions of a half-sandwich manganese complex containing both hydride and boryl ligands as a boryl hydride or a-borane complex...

Schlecht and Hartwig reported in 2000 that both photolysis of MeCpMn(CO)3 in the presence of HBcat (catecholborane) or HBpin (pinacolborane) and borylation of [MeCpMn(CO)2H] by ClBcat, ClBpin or ClBCy2 (Cy = cyclohexyl) can give a-borane complexes of manganese 3 [20]. The synthesis... 

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