نتایج جستجو برای: tetra hydroxyl borate
تعداد نتایج: 36917 فیلتر نتایج به سال:
The crystal structure of Ce[B(5)O(8)(OH)(H(2)O)]NO(3)·2H(2)O, cerium(III) aqua-hydroxidoocta-oxidopenta-borate nitrate dihydrate, has been redetermined from single-crystal X-ray diffraction data. In contrast to the previous determination [Li et al. (2003 ▶). Chem. Mater.15, 2253-2260], the present study reveals the location of all H atoms, slightly different fundamental building blocks (FBBs) o...
Ferrogels are soft polymer materials containing a filler of magnetic particles that allow the material to be activated by magnetic fields. These materials have shown capabilities for large strains, fast response, ease of synthesis and biocompatibility and have potential applications including artificial muscles, controlled drug release systems, and hyperthermia cancer treatment. In this work, t...
The SOCE (store-operated Ca2+ entry) pathway plays a key role in both normal cells and cancerous cells. However, its molecular mechanism remains a long-lasting puzzle of Ca2+ signalling. In this paper, we provide evidence that butyric acid, a dietary fibre-derived short-chain fatty acid, induces apoptosis of colon cancer cells via SOCE signalling networks. We found that sodium butyrate (NaB) in...
In the title solvated salt, C11H28N4(2+)·2C24H20B(-)·2C3H6O, the C-N bond lengths in the central CN3 unit of the guanidinium ion are 1.3331 (16), 1.3407 (16) and 1.3454 (16) Å, indicating partial double-bond character in each. The central C atom is bonded to the three N atoms in a nearly ideal trigonal-planar geometry [N-C-N angles = 118.96 (11), 120.51 (12) and 120.53 (11)°] and the positive c...
The title compound, C(11)H(20)N(2)PS(+)·BF(4) (-), is a salt of 2-(diisopropyl-thio-phospho-ryl-amino)-pyridine, a chelating bidentate ligand that furnishes an S atom as a soft donor and a pyridine N atom as a hard atom for transition-metal complexation. The title salt crystallizes with two formula units in the asymmetric unit. The two independent cations are protonated at the pyridine N atoms ...
The asymmetric C atom in the title compound, C(21)H(17)BrClNO, is in a slightly distorted tetra-hedral environment and the NH unit adopts a gauche orientation with respect to the CO group. In the crystal, pairs of inter-molecular N-H⋯O hydrogen bonds form centrosymmetric dimers.
ABSTRACT. Complexes of Co(II), Ni(II) and Cu(II) ions with tetra amine hydrazide ligand [H4L] were prepared characterized using physical spectral methods. Analytical data showed that the complexes found in (1:2) ligand:metal ratio. Spectral studies revealed bonded to metal ion neutral tetradentate or tetrabasic manner through azomethine nitrogen atom, protonated/deprotonated hydroxyl group. Fro...
The essentiality of boron for higher plants was demonstrated (1) in 1910 and extensively verified in the two succeeding decades. Since then a voluminous literature has accrued concerning the anatomical, morphological, and biochemical alterations of boron-deficient plants. Inasmuch as they are not pertinent to the following report, many of the specific or general roles that have been postulated ...
A novel potentiometric ion-selective PVC membrane sensor for analysis of atorvastatin (AT) in pharmaceutical preparations based on atorvastatin-(tetraphenyl borate), (AT-(TPB)2) as sensing element, tetraphenyl borate as additive and tris-2-ethyl-hexyl phosphate (TOP) as plasticizer solvent was prepared. The electrode shows a good Nernestian response over the concentration range of 0.09–5586 µ...
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