Reduction Behavior of Anisyl-substituted P-Ferrocenyl Phospholes.

P-Ferrocenylphospholes with differing substituents in α-position have been synthesized and their identity and purity was confirmed using multinuclear NMR spectroscopy, MS, elemental analysis and single crystal X-ray diffraction. Furthermore, the redox properties have been explored with electrochemical measurements. Transferring the reduction to a preparative scale using lithium leads to reductive P-C bond cleavage furnishing the corresponding phospholide which has been transformed to P-tert-butyl substituted phosphole.

Asymmetrically Substituted Phospholes as Ligands for Coinage Metal Complexes.

A series of coinage metal complexes asymmetrically substituted 2,5-diaryl phosphole ligands is reported. Structure, identity, and purity of all obtained complexes were corroborated with state-of-the-art techniques (multinuclear NMR, mass spectrometry, elemental analysis, X-ray diffraction) in solution and solid state. All complexes obtained feature luminescence in solution as well as in the solid state.

Phosphetes via Transition Metal Free Ring Closure - Taking the Proper Turn at a Thermodynamic Crossing.

A transition metal free route to phosphetes featuring an exocyclic alkene unit is presented. In this approach phosphanides are added to a variety of diynes generating phosphaallylic intermediates which depending on the reaction conditions transform either to phosphetes or the corresponding phospholes. Investigation of the reaction mechanism by combined quantum chemical and experimental means identifies phosphole formation as thermodynamically controlled reaction path, whereas kinetic control furnishes the corresponding phosphetes.

3D Micro/Nanopatterning of a Vinylferrocene Copolymer.

In nanoimprint lithography (NIL), a pattern is created by mechanical deformation of an imprint resist via embossing with a stamp, where the adhesion behavior during the filling of the imprint stamp and its subsequent detachment may impose some practical challenges. Here we explored thermal and reverse NIL patterning of polyvinylferrocene and vinylferrocene-methyl methacrylate copolymers to prepare complex non-spherical objects and patterns. While neat polyvinylferrocene was found to be unsuitable for NIL, freshly-prepared vinylferrocene-methyl methacrylate copolymers, for which identity and purity were established, have been structured into 3D-micro/nano-patterns using NIL.

Cis versus Trans: The Coordination Environment about the Tin(IV) Atom in Spirocyclic Amino Alcohol Derivatives.

The syntheses of amino alcohols MeN(CH CH CMe OH) (1), MeN(CMe CH OH)(CH CMe OH) (2), MeN(CH CH CH OH)(CH CMe OH) (3), MeN(CH CH CMe OH)(CH CMe OH) (4), MeN(CH CH CMe OH)(CH CH OH) (5), and MeN(CH CH OH) (CH CH CH OH) (6) as well as spirocyclic tin(IV) alkoxides spiro-[nBuN(CH CMe O) ] Sn (7), spiro-[MeN(CH CH CMe O) ] Sn (8), spiro-[para-FC H N (CH CMe O) ] Sn (9), spiro-[MeN(CMe CH O)(CH CMe O)] Sn (10), spiro-[MeN(CH CH CH O)(CH CMe O)] Sn (11), spiro-[MeN(CH CH CMe O)(CH CMe O)] Sn (12), spiro-[MeN(CH CH CMe O)(CH CH O)] Sn (13) and spiro-[MeN(CH CH O)(CH CH CH O)] Sn (14) are reported. The compounds were characterized by H, C (1-14) and Sn (7-14) NMR and IR spectroscopy, EIMS and single-crystal XRD (2, 7-10 and 13, 14). Graph-set analyses were performed for compounds [(MeNH(CMe CH OH)(CH CMe OH)][HC(O)O] (2 a) and 2.