Aluminium and Indium

Complexes with Aluminium and Indium. The complexes [(7i-Cp)(CO)3WAlR2] (R = Me or Et) have been prepared by the reaction of [(7t-Cp)W(CO)3H] with R2AIH. Solution i.r. spectra suggest that these complexes exist in both A1—W-and CO—Al-bonded forms. A comparative study of the relative utility of various methods available for preparing compounds with metal-indium bonds has been published and [ (jt-Cp)(CO)3M In.X3 J (M = Mo or W, X = Cl or Br, and n = 1, 2, or 3) have been prepared by several routes.  

Dinitrogen, Nitrosyl, Isocyanide, and Cyanide Complexes.—Spectroscopic evidence has been presented for the formation of [Mo(CO)5N2] and [W(C0)5N2] complexes subsequent to photolysis of the hexacarbonyls in a nitrogen matrix at 20 The complexes [Mo(N2)(PPh3)2,PhMe] and 

The nitrogen Is binding energy in [MoCl2(NO)2diars] has been reported. [M(CO)4(diphos)] (M = Mo or W) react with NO to form the new cationic nitrosyl complexes [M(CO)3(NO)(diphos)], isoelectronic with [V(CO)3-N0(PR3)2]. NOCl reacts with [M2(CO)8Cl4,] (M = Mo or W) to give new mononitrosyl derivatives which have been tentatively formulated as [M(NO)- 

George and C. D. Seibold, Inorg. Nuclear Chem. Letters, 1972,8, 465. 

120° for the NO groups to be considered as Lewis acids. The deviation from linearity is considered to be due to imbalance in the back-donation from the metal s orbitals into the 7i -orbitals of NO.  

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Table 5.64. Highest melting points (°C) in the alloys of aluminium and indium with compound-forming elements of the 4th and 6th rows of the Periodic Table. 

Okuda and co-workers have applied the tetradentate (OSSO)-type ligands to prepare both aluminium and indium complexes, both of which are active for LA... 

We then tested salts of other group Ilia elements, aluminium and indium, and these too proved to be inducers. It was only after we had predicted, but not published, the activity of aluminium and indium in these tests that Adamson reported them active as anticancer agents. The verification of the prediction tended to reinforce our belief in the correlation and, more importantly, in the possibility of a similar mechanism of action in the two apparently dissimilar effects. 

B sub group metals are rather more covalent in character, those of Gps IIB and IIIB being nearer true metals than Se, Te, As, Sb and Bi. Zinc and cadmium, for example, have distorted, close-packed hexagonal arrangements in which the axial ratios are about 1.87 instead of the ideal 1.63 (Fig. 80). Aluminium and indium have approximately face-centred cubic lattices, and thallium has a close-packed hexagonal one. In Gp.VIB, white tin possesses a character between that of lead and silicon its co-ordi-... 

AlInP. Reacting PH3 with the trimethyl or trIethyl derivatives of aluminium and indium leads to the formation of ternary phosphide films of the two metals [50, 214 to 218], see also [219, 220]. 

C22H23N3O9. An organic reagent used for the detection and estimation of aluminium. It is a brownish-red powder, soluble in water which gives a red lake with aluminium which can be estimated colorimetrically. It can also be used for detecting scandium and indium. 

Boron, being chemically a non-metal, is resistant to attack by nonoxidising acids but the other members of the group react as typical metals and evolve hydrogen. Aluminium, gallium and indium are oxidised to the + 3 oxidation state, the simplified equation being... 

A. J. Downs, ed.. Chemistry of Aluminium, Gallium, Indium, oA Thahum, Roudedge, Chapman, and Had, London, June 1993. 

Mendeleev predicted that the melting point of gallium would fall between those of aluminium (660°C) and indium (115°C). In fact gallium has an anomalously low melting point of 30°C. 

Reactions with the trialkyls of aluminium, gallium and indium are proceeding without eomplications as well 39) ... 

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