Inputs for the month of December '14
1. Name & Citation of the Publication: Physical Review E Rapid Comm.( to appear)
Title: Morphological evolution of domains in spinodal decomposition
Authors: Charu Datt, Sumesh P. Thampi and Rama Govindarajan ( TCIS)
Abstract :Domain growth in spinodal decomposition is usually described by a single timeevolving length scale. We show that the evolution of morphology of domains is non-monotonic.
The domains elongate rapidly at first and then, with the help of hydrodynamics, domains return
to a more circular shape. The initial elongation phase does not alter with hydrodynamics. A small
deviation from critical composition changes the morphology dramatically.
2. Name & Citation of the Publication: Organometallics 2015, 34, DOI: 10.1021/om501286g
Title: A Molecular Complex with a Formally Neutral Iron Germanide Motif (Fe2Ge2)
Authors: Anukul Jana ( TCIS), Volker Huch, Henry S. Rzepa, and David Scheschkewitz
Abstract: We report the synthesis and isolation of a stable complex containing the formally
neutral Fe2Ge2 motif, which is stabilized by the coordination of an N-heterocyclic carbene to the
germanium and carbon monoxide to the iron center. [(NHCiPr2Me2)GeFe(CO)4]2 is obtained by
reduction of the NHCiPr2Me2-coordinated dichlorogermylene adduct with Fe(CO)4, which in
turn is obtained from reaction of Fe2(CO)9 with GeCl2·NHCiPr2Me2 (NHCiPr2Me2 = 1,3diisopropyl-4,5-dimethylimidazol-2-ylidene). The solid state
structure of the title compound reveals two distinct
coordination modes for the Fe(CO)4 fragments: bridging (type) and terminal (-type). In solution, the rapid equilibrium
between the two modes was resolved by NMR at −35°C.
Reaction with propylene sulfide at room-temperature affords
the sulfide-bridged digermanium complex with two terminal Fe(CO)4 moieties.