Paul G. Waddell

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Helically chiral N,N,O,O-boron chelated dipyrromethenes showed solution-phase circularly polarized luminescence (CPL) in the red region of the visible spectrum (λem (max) from 621 to 663 nm). The parent dipyrromethene is desymmetrised through O chelation of boron by the 3,5-ortho-phenolic substituents, inducing a helical chirality in the fluorophore. The(More)
The title compound, C14H13NO3, adopts a twisted conformation in the crystal, with an inter-planar angle between the two benzene rings of 87.30 (5)°. Mol-ecules within the structure are linked via O-H⋯O inter-actions, forming a hydrogen-bonded chain motif with graph set C(7) along the glide plane in the [001] direction.
Both the platininum complex and the solvent mol-ecule of the title compound, [PtBr(2)(C(18)H(15)P)(2)]·CHCl(3), are located on a twofold rotation axis. The CH unit and the Cl atoms of the CHCl(3) mol-ecule are disordered over two equally occupied positions. The complex shows a trans square-planar geometry about the Pt atom.
The title binuclear Cu(II) complex, [Cu(2)(CH(3)CO(2))(4)(C(5)H(4)Cl(2)N(2))(2)], is disposed about a crystallographic inversion center, located at the mid-point of the Cu-Cu connecting line. The Cu⋯Cu distance is 2.6600 (6) Å and each metal atom exhibits a Jahn-Teller-distorted octa-hedral geometry.
The asymmetric unit of the title compound, C(8)H(6)ClN(2)S(2), comprises two mol-ecules forming a dimer via π-π stacking inter-actions [centroid-centroid distance = 3.634 (10) Å] and intra-dimer S⋯S contacts [3.012 (4) and 3.158 (4) Å] between the two mol-ecules in a cis-antarafacial arrangement.
The title compound, [PdCl(2)(C(8)H(11)O(2)P)(2)], has a comparable structure to those of related palladium dichloride complexes containing trimethyl phosphinite and methyl diphenyl phosphinite. The Pd atom is located on a crystallographic twofold rotation axis: thus, there is just one half-mol-ecule in the asymmetric unit. The structure is isomorphous with(More)
The title compound, [Sb(C(6)H(5))(3)(N(2)S(2))], contains a molecular entity that is very similar to that of the known polymorph of Sb(S(2)N(2))Ph(3) [Kunkel et al. (1997 ▶). Z. Naturforsch. Teil B, 52, 193-198], differing only in the orientation of the phenyl rings. The bond order in the SNSN unit is S-N=S=N, consisting of one long S-N bond, an(More)
The title compound, [PtCl(2)(C(9)H(21)O(3)P)(2)], was obtained from a solution of PtCl(2)(COD) (COD = 1,5-cyclooctadiene) and triisopropyl-phosphite in dichloro-methane. The complex features a Pt(II) atom coordinated by two Cl and two P atoms, yielding a slightly distorted cis square-planar geometry.
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