Nonstoichiometric Ellenbergerite-Type Phosphates: Hydrothermal Synthesis, Crystal Chemistry, and Magnetic Behavior.

We synthesized single crystals of NaNi(OH)(HPO) () and polycrystals of (Na, Ni)Ni(OH)(HPO) () with ellenbergerite-like structures using the hydrothermal method. The phases crystallize in the hexagonal space group 6 with the following unit cell parameters: = 12.5342(1) Å, = 4.

Novel aluminophosphate Na[AlPO] with the original microporous crystal structure established in the study of a pseudomerohedric microtwin.

The synthesis and characterization of a new aluminophosphate, Na[AlPO], obtained as single crystals in the same experiment together with Cl-sodalite, Na[AlSiO]Cl, is reported. Na[AlPO], with a strongly pseudo-orthorhombic lattice, is described by the monoclinic crystal structure established in the study of a pseudomerohedric microtwin. The design of Na[AlPO] can be interpreted as an alternative to sodalite, with a monoclinic (pseudo-orthorhombic) 2×4×1 super-structure and unit-cell parameters multiples of those of sodalite: a ≃ 2a, b ≃ 4b and c ≃ c.

RbCaCu(PO)O, a novel oxophosphate with a shchurovskyite-type topology: synthesis, structure, magnetic properties and crystal chemistry of rubidium copper phosphates.

Single crystals of RbCaCu(PO)O were synthesized by a hydrothermal method in the multicomponent system CuCl-Ca(OH)-RbCl-BO-RbPO. The synthesis was carried out in the temperature range from 690 to 700 K and at the general pressure of 480-500 atm [1 atm = 101.325 kPa] from the mixture in the molar ratio 2CuO:CaO:RbO:BO:PO.

Bi(PO)O, the Simplest Bismuth(III) Oxophosphate: Synthesis, IR Spectroscopy, Crystal Structure, and Structural Complexity.

The bismuth(III) oxophosphate Bi(PO)O was obtained by hydrothermal synthesis. The unit cell has a = 5.6840(6) Å, b = 7.