https://www.selleckchem.com/products/sis17.html A series of related acetylacetonate-carbonyl-rhodium compounds substituted by functionalized phosphines has been prepared in good to excellent yields by the reaction of [Rh(acac)(CO)2] (acac is acetylacetonate) with the corresponding allyl-, cyanomethyl- or cyanoethyl-substituted phosphines. All compounds were fully characterized by 31P, 1H, 13C NMR and IR spectroscopy. The X-ray structures of (acetylacetonato-κ2O,O')(tert-butylphosphanedicarbonitrile-κP)carbonylrhodium(I), [Rh(C5H7O2)(CO)(C8H13N2)] or [Rh(acac)(CO)(tBuP(CH2CN)2] (2b), (acetylacetonato-κ2O,O')carbonyl[3-(diphenylphosphanyl)propanenitrile-κP]rhodium(I), [Rh(C5H7O2)(C15H14N)(CO)] or [Rh(acac)(CO)Ph2P(CH2CH2CN)] (2h), and (acetylacetonato-κ2O,O')carbonyl[3-(di-tert-butylphosphanyl)propanenitrile-κP]rhodium(I), [Rh(C5H7O2)(C11H22N)(CO)] or [Rh(acac)(CO)tBu2P(CH2CH2CN)] (2i), showed a square-planar geometry around the Rh atom with a significant trans influence over the acetylacetonate moiety, evidenced by long Rh-O bond lengths as expected for interactions.The synthesis and structures of three isoxazole-containing Schiff bases are reported, namely, (E)-2-[(isoxazol-3-yl)imino]methylphenol, C10H8N2O2, (E)-2-[(5-methylisoxazol-3-yl)imino]methylphenol, C11H10N2O2, and (E)-2,4-di-tert-butyl-6-[(isoxazol-3-yl)imino]methylphenol, C18H24N2O2. All three structures contain an intramolecular O-H...N hydrogen bond, alongside weaker intermolecular C-H...N and C-H...O contacts. The C-O(H) and imine C=N bond lengths were consistent with structures existing in the enol rather than the keto form. Despite having dihedral angles less then 25°, none of the compounds were observed to be strongly thermochromic, unlike their anil counterparts; however, all three compounds showed a visible colour change upon irradiation with UV light.Two conformational polymorphs of (N,N-dibutyldithiocarbamato-κ2S,S')[tris(3,5-diphenylpyrazol-1-yl-κN2)hydroborato]cobalt(II), [Co(C45H34BN6)(C9H18N