1-Difluoroboronyloxy-3-(N-methylimino)-1-phenyl-1-butene and its Two Photoproducts

2-[4-(Dimethylamino)phenyl]-3,3-difluoro-3H-naphtho[1,2-e][1,3,2]oxazaborinin-2-ium-3-uide

“…The B-N distance [1.589 (2) Å ] is notably longer than a normal B1-N1 single bond (ca 1.52 Å ; Singh et al, 1986;Lugo & Richards, 2010), indicating weak bonding, and the B1-O1 bond is slightly shorter [1.460 (2) versus 1.48 Å ]. This pattern of bond lengths is contrary to the model of Itoh and co-workers where the B-O bond is shorter and B-N bond is markedly longer (Itoh et al, 1998), indicating that the complex adopts a structure close to an enol tautomer.…”

Substituent Effect in 2-Benzoylmethylenequinoline Difluoroborates Exhibiting Through-Space Couplings. Multinuclear Magnetic Resonance, X-ray Diffraction, and Computational Study

“…19−22 In addition to BODIPYs, the most common structures are those containing NBF 2 N, 23,24 NBF 2 O, 25−28 OBF 2 O, 29−32 and NBF 2 S 33 moieties where to forms are different in compounds that carry an unsymmetrically chelated BF 2 moiety. It was shown 34 that the β-ketoiminate difluoroborate exists entirely as an alkoxy-imine-BF 2 form in the solid state 25,26,33,35,36 (Chart 1).…”

“…Among these the BODIPY dyes play a special role in chemodosimetry, biolabeling, , NIR spectroscopy probes, − solar cells , in photodynamic therapy, and other , applications as they are relatively easy to functionalize. , Their chemical structure and luminescent properties are often studied in solution and in the solid state. − The BODIPY core contains two pyrrole units, and its structure is symmetric with one covalent and one dative N → B bond (DB) where the real structure is an average of two identical forms and both N–B distances are the same in solid state. − In addition to BODIPYs, the most common structures are those containing NBF 2 N, , NBF 2 O, − OBF 2 O, − and NBF 2 S moieties where to forms are different in compounds that carry an unsymmetrically chelated BF 2 moiety. It was shown that the β-ketoiminate difluoroborate exists entirely as an alkoxy-imine-BF 2 form in the solid state ,,,, (Chart ).…”

Photodimerization of enaminoketonatoboron difluorides

“…Thus, the photodimerization in the solid state depends on the relative geometry of reactant molecules in the crystal lattice: the centerto-center distance and angle between the nearest neighbor double bonds. 14 The geometrical parameters of 1a-1c obtained from single crystal X-ray structure analysis 15 are shown in Table 6. To achieve a [2 + 2] topochemical photocycloaddition, not only the center-to-center distance (less than ca.…”