High-Pressure Behaviors of AgS Nanosheets: An in Situ High-Pressure X-Ray Diffraction Research.

An in situ high-pressure X-ray diffraction study was performed on AgS nanosheets, with an average lateral size of 29 nm and a relatively thin thickness. Based on the experimental data, we demonstrated that under high pressure, the samples experienced two different high-pressure structural phase transitions up to 29.4 GPa: from monoclinic 2/ structure (phase I, -AgS) to orthorhombic 222 structure (phase II) at 8.

μ-10,21-Dimethyl-3,6,14,17-tetra-aza-tricyclo-[17.3.1.1]tetra-cosa-1(23),8(24),9,11,19,21-hexa-ene-23,24-diolato-κN,N,O,O:N,N,O,O]bis-[(nitrato-κO,O')nickel(II).

In the title centrosymmetric dinuclear nickel complex, [Ni(2)(C(22)H(30)N(4)O(2))(NO(3))(2)], each of the two Ni(II) atoms has a distorted octa-hedral geometry, defined by two N atoms and two O atoms from the macrocyclic ligand and two O atoms from a chelating nitrate anion. The two Ni atoms are bridged by two phenolate O atoms, forming a four-membered Ni(2)O(2) ring.

(5,6:19,20-Dibenzo-1,4,11,14-tetra-oxa-8,17-diaza-cyclo-eicosane-κN,O,O,N)dinitrato-κO,O'-cadmium(II).

In the title compound, [Cd(NO(3))(2)(C(22)H(30)N(2)O(4))], the Cd(II) atom is eight-coordinated by two amine N atoms and two O atoms from the 5,6:19,20-dibenzo-1,4,11,14-tetra-oxa-8,17-diaza-cyclo-eicosane ligand and four O atoms from two nitrate groups. The coordination geometry about Cd is antiprismatic. One nitro O atom is disordered equally over two positions.