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A swelling Na-4-mica of the brittle mica type (ideal chemical composition of Na 4 Mg 6 Al 4 Si 4 O 20 F 4 ?xH 2 O) was prepared by a simpli®ed one-step synthetic process from kaolinite at or below 800 ³C. Hydrated and welldispersed Na-4-mica particles of about 2 mm in size were prepared at 800 ³C. The 27 Al MAS-NMR spectrum of this mica showed that almost all Al was in tetrahedral coordination while the 29 Si MAS-NMR spectrum showed that the nearest neighbor environment of Si was mainly Si(3Al), as expected based on the Si : Al molar ratio of 1 : 1 in the Na-4-mica. The CEC of the mica was determined to be 447 mequiv (100 g) 21 . With this Na-4-mica, the Zn, Cd, Pb, Cu and Ba uptake kinetics were investigated in a 0.5 M NaCl background solution at room temperature and were found to be quite rapid.

Isolation and characterisation of the first Li/halogen phosphinidenoid transition-metal complex as well as low-temperature solution NMR, MAS-NMR experiments, DFT structures and calculated NMR chemical shifts are reported.

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