Reference

Metal complexes as ligands

Metal complexes as ligands. Polynuclear alkali metal complexes with diaquomonooxalato-nickel(II) and -cobalt(II). Banerjee, A. K.; Prakash, Sheo Satya; Roy, S. K. (Chem. Dep., Patna Univ., Patna 800 005, India). J. Indian Chem. Soc., 62(11), 818-20 (English) 1985. CODEN: JICSAH. ISSN: 0019-4522. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Polymeric octahedral M(H2O)2C2O4 (M = Ni, Co) were used as metal complex ligands in the prepn. of O-bridged binuclear [(M1L)M(H2O)2C2O4] (M1 = Li, Na, K; HL = 8-hydroxyquinoline, 1-nitroso-2-naphthol). In these complexes the C:O frequencies were obsd.In this experiment, several chemicals are used like 5965-38-8 and 106980-80-7 only < 1650 cm-1, suggesting that all the oxalato groups present in the Co and Ni adducts are not normal terminal but most likely bridged groups. The electronic spectral and magnetic moment studies indicate that the polymeric octahedral Co and Ni ions are converted to tetrahedral ions in their alkali metal adducts. .

Method for the preparation of acicular particles containing iron and other divalent metals

Method for the preparation of acicular particles containing iron and other divalent metals. Mollard, Paul; Paris, Jacques; Rousset, Abel (Agence Nationale de Valorisation de la Recherche, Fr.). U.S. US 3994819 30 Nov 1976, 4 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C04B035-26. NCL: 252182000. PRIORITY: FR 74-31738 13 Sep 1974. DOCUMENT TYPE: Patent CA Section: 77 (Magnetic Phenomena) The product contains at least 1 divalent metal, e.g. Co, Ni, Cu, Mn, Zn, Mg, or Cd, the ions of which are compatible with the spinel lattice. A 1st soln. contg. cations of Fe and at least 1 divalent metal is prepd. A 2nd soln. contg. oxalic acid is prepd. Either of the solns. must contain anions of chlorides or sulfates, have a pH >2, and contain an alc. The 1st soln. is added very slowly to the 2nd soln. which is stirred vigorously to obtain pptn. of substantially uniform acicular particles of mixed oxalates having a length <1.In this experiment, several chemicals are used like 12063-19-3 and 5965-38-8 mu. and an acicular ratio >3. The product is used for the manuf. of magnetic tapes. .