Etude calorimétrique et structure cristalline du putrescinium monohydrogénomonophosphate dihydrate NH3(CH2)4NH3HPO42H2O
✍ Scribed by Slaheddine Kamoun; Amor Jouini
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 588 KB
- Volume
- 89
- Category
- Article
- ISSN
- 0022-4596
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
The title compound is prepared by adding aqueous ammonia to a solution of phosphoric acid containing a small amount of iron (III) ions (3%). It crystallizes in the monoclinic system, space group C2/c, a ؍ 16.8450(9) A > , b ؍ 9.6111(1) A > , c ؍ 17.6470(7) A > , and ؍ 90.91(2)°, R ؍ 0.031,
A nickel molybdenum phosphate, (NH 3 CH 2 CH 2 NH 3 ) 4 ' (NH 3 CH 2 CH 2 NH 2 ) ' Na ' [Ni 2 Mo 12 O 30 (PO 4 ) (HPO 4 ) 4 (H 2 PO 4 ) 3 ] ' 6H 2 O, involving molybdenum present in V oxidation, has been hydrothermally synthesized and structurally characterized by single crystal X-ray di4raction. De
The first example of an aluminophosphate containing organic anions covalently bonded to the framework of the structure is reported was prepared hydrothermally and adopts a layered structure. The oxalate groups act as bidentate ligands to Al 3؉ and hold the structure together by strong interlayer P-