منابع مشابه
Poly[tetraaqua-di-μ4-malonato-barium(II)cadmium(II)]
In the title complex, [BaCd(C(3)H(2)O(4))(2)(H(2)O)(4)](n), the Ba(II) atoms, located on crystallographic twofold axes, adopt slightly distorted square-anti-prismatic coordination geometries, while the Cd(II) atoms, which lie on crystallographic centres of symmetry, have a distorted octa-hedral coordination. Each malonate dianion binds two different Cd(II) atoms and two different Ba(II) atoms. ...
متن کاملSelectivity in biomineralization of barium and strontium.
The desmid green alga Closterium moniliferum belongs to a small number of organisms that form barite (BaSO(4)) or celestite (SrSO(4)) biominerals. The ability to sequester Sr in the presence of an excess of Ca is of considerable interest for the remediation of (90)Sr from the environment and nuclear waste. While most cells dynamically regulate the concentration of the second messenger Ca(2+) in...
متن کاملBarium manganese(II) selenostannate(IV), BaMnSnSe4
The title compound, BaMnSnSe(4), was obtained by reaction of the elements at 1123 K in an evacuated silica tube. It adopts the BaCdSnS(4) structure type, which is a variant of the SrIn(2)Se(4) structure type. Its structure consists of distorted edge-sharing tetra-hedra, alternating with Mn and Sn atoms as central atom. These [MnSnSe(6)] units display corner sharing, forming stacked infinite lay...
متن کاملBis(chlorido)(dimethylsulfoxide-κO)barium(II)
The title compound, [BaCl(2)(C(2)H(6)SO)], forms a Ba(6)Cl(9) cluster in which the BaCl(2) units are connected via dimethyl-sulfoxide (DMSO) and chloride bridges. The central Cl atom of the Ba(6)Cl(9) cluster is located on a threefold inversion axis and is coordinated octa-hedrally to six barium cations. In the crystal, the clusters are arranged in rows, which are inter-connected by the DMSO mo...
متن کاملPoly[tetraaquabis(μ2-2,4,6-trinitrophenolato)barium(II)]
The asymmetric unit of the title compound, [Ba(C(6)H(2)N(3)O(7))(2)(H(2)O)(4)](n), consists of a barium ion coordinated by two nitrophenolate ligands and four water mol-ecules. Barium is deca-coordinated by O atoms. These units are linked together through bridging nitro groups to form a one-dimensional polymeric chain. The three-dimensional packing is facilitated through hydrogen-bonding inter-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1934
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.20.5.291