{2-[(2,6-Difluoro­phen­oxy)meth­yl]phen­yl}boronic acid

The planes of the two benzene rings in the mol­ecule of the title compound, C13H11BF2O3, form a dihedral angle of 76.06 (3)°; the C—O—C—C torsion angle characterizing the conformation of the central link of the mol­ecule is −79.20 (1)°. The dihydroxy­boron group is not coplanar with the benzene ring bonded to the B atom; one of the C—C—B—O torsion angles is 32.39 (2)°. One of the OH groups of the boronic acid fragment is engaged in an intra­molecular hydrogen bond, whereas the second OH group participates in inter­molecular hydrogen bonding, which leads to the formation of centrosymmetric dimers

[3-Bromo-2-(3-fluoro­benz­yloxy)phen­yl]boronic acid

In the title compound, C13H11BBrFO3, the dioxy­boron fragment is close to co-planar with the benzene ring to which the B atom is connected [dihedral angle = 8.96 (4)°]. The dihedral angle between the two benzene rings is 14.8 (2)°. One of the OH groups is engaged in an intra­molecular O—H⋯O hydrogen-bonding inter­action. The second OH group is involved in inter­molecular hydrogen bonding, forming a centrosymmetric dimer. The F atom and the corresponding meta-H atom are disordered over two positions in a 0.675 (6):0.325 (6) ratio

(2-Butoxy­phen­yl)boronic acid

The title compound, 2-(CH3CH2CH2CH2O)C6H4B(OH)2, exists as a centrosymmetric hydrogen-bonded dimer. Dimers are linked via C—H⋯π and π–π [with closest C⋯C contact of 3.540 (3) Å] inter­actions to produce a two-dimensional array

2,4-Dibutoxy­phenyl­boronic acid

In the crystal of the title compound, C14H23BO4, centrosymmetric dimers linked by pairs of O—H⋯O hydrogen bonds occur. The dimers are linked via C—H⋯O contacts, generating a two-dimensional array parallel to (12). These are inter­connected by weak O—H⋯O hydrogen bonds, as well as C—H⋯π inter­actions

(2,4-Dipropoxyphen­yl)boronic acid

In the crystal, the title compound, C12H19BO4, exists as a centrosymmetric O—H⋯O hydrogen-bonded dimer. Dimers are linked via C—H⋯O hydrogen bonds, generating an infinite zigzag chain oriented parallel to [11]. The chains are assembled, giving sheets aligned parallel to (21) and inter­connected by weak C—H⋯π inter­actions, producing a three-dimensional network

1,2:3,5-Bis[(4-tert-butyl­phen­yl)boranedi­yl]-α-d-glucofuran­ose

The crystal structure of the title compound, C26H34B2O6, comprises two crystallographically independent mol­ecules. In the crystal, the mol­ecules are linked by multiple inter­molecular O—H⋯O and C—H⋯O hydrogen bonds into a two-dimensional array

Mesit­yl(2,4,6-trimeth­oxy­phen­yl)borinic acid

In the title mol­ecule, C18H23BO4, the dihedral angle between the least-squares planes of the aromatic rings is 84.88 (3)°. The B atom deviates by 0.202 (1) Å from the least-squares plane of the mesityl ring. All of the meth­oxy groups are approximately coplanar with the 2,4,6-trimeth­oxy­phenyl ring, whereas the BOH group is twisted with respect to it by 19.5°. The borinic OH group is engaged in an intra­molecular O—H⋯O hydrogen bond with one of ortho-meth­oxy groups. The mol­ecular structure is stabilized by weak C—H⋯O contacts. In the crystal, mol­ecules are linked by weak C—H⋯O and C—H⋯π inter­actions, generating a three-dimensional network

Ammonia–triphenyl­borane

The asymmetric unit of the title compound, C18H18BN or (C6H5)3B·NH3, comprises two crystallographically independent but virtually identical mol­ecules. Mol­ecules of one type are linked with each other by N—H⋯π inter­actions, generating an infinite column aligned along the b-axis direction. The columns of different types of mol­ecules are inter­connected by C—H⋯π inter­actions, producing a three-dimensional array