The influence of the axial group on the crystal structures of boron subphthalocyanines.

The crystal structures of 16 boron subphthalocyanines (BsubPcs) with structurally diverse axial groups were analyzed and compared to elucidate the impact of the axial group on the intermolecular π-π interactions, axial-group interactions, axial bond length and BsubPc bowl depth. π-π interactions between the isoindole units of adjacent BsubPc molecules most often involve concave-concave packing, whereas axial-group interactions with adjacent BsubPc molecules tend to favour the convex side of the BsubPc bowl. Furthermore, axial groups that contain O and/or F atoms tend to have significant hydrogen-bonding interactions, while axial groups containing arene site(s) can participate in π-π interactions with the BsubPc bowl, both of which can strongly influence the crystal packing.

Correction: A chelated borinium cation.

Correction for 'A chelated borinium cation' by Christopher Major , , 2024, , 10075-10078, https://doi.org/10.1039/D4DT01242A.

A chelated borinium cation.

Two coordinate boron cations are rare. Herein we report the synthesis of [RNSiMeCH]BF (R = Dipp 3, 1-Ad 5) (Dipp = CH(iPr), Ad = CH) the reaction of BF with the corresponding dilithiated diamides. Subsequent abstraction of fluoride provided the corresponding borinium salts, [(RNSiMeCH)B][B(CF)] (R = Dipp 6, 1-Ad 8).

Mechanochemical Synthesis of Chromium(III) Complexes Containing Bidentate PN and Tridentate P-NH-P and P-NH-P' Ligands.

Chromium(III) complexes bearing bidentate {NH(CH)PPh: PN, ()-[NH(CHPh)PPh]: P'N} and tridentate [PhP(CH)N(H)(CH)PPh: P-NH-P, ()-(Pr)PCHCHN(H)CH(Ph)CH(Ph)PPh: P-NH-P'] ligands have been synthesized using a mechanochemical approach. The complexes {-[Cr(PN)Cl]Cl (), -[Cr(P'N)Cl]Cl (), -Cr(P-NH-P)Cl (), and -Cr(P-NH-P')Cl ()} were obtained in high yield (95-97%) the grinding of the respective ligands andthe solid Cr(III) ion precursor [CrCl(THF)] with the aid of a pestle and mortar, followed by recrystallization in acetonitrile. The isolated complexes are high spin.