Modern inorganic chemistry

396 THE TRANSITION ELEMENTS + 2 species finally to insoluble kFe(OH) 2 ' (or hydrated oxide): for this Fe(OH) 3 + e~ -+ Fe(OH) 2 ...

THE TRANSITION ELEMENTS 397 an acid solution of the salt with M = NH 4 (Mohr's salt, terrous ammonium sulphate') is much less qu ...

398 THE TRANSITION ELEMENTS OH 2 ~^v (^02) H 20 N — f protein) N—(protein) Figure 13.4. Schematic representation of haetn (porph ...

THE TRANSITION ELEMENTS 399 electrolytic. Defects in the iron lattice caused by strain or the presence of impurities produce are ...

400 THE TRANSITION ELEMENTS depends o^ nou. for example in a motor car. However, if iron is in coii tact with a less reactive me ...

THE TRANSITION ELEMENTS 401 COBALT THE ELEMENT Cobalt compounds have been in use for centuries, notably as pigments ('cobalt blu ...

402 THE TRANSITION ELEMENTS chloride*, and Werner pioneered the study of coordination com- pounds. We shall consider a few of th ...

THE TRANSITION ELEMENTS 403 orbitals occurs, and all these electrons are paired in a more stable energy level (p. 366). Such an ...

404 THE TRANSITION ELEMENTS example CoSO 4 .7H 2 O (cf. FeSO 4 .7H 2 O). However, this aquo cation is less strongly reducing tha ...

THE TRANSITION ELEMENTS 405 easily oxidised to the + 3 state. A large number of other cobalt(II) complexes, cationic. neutral an ...

406 THE TRANSITION ELEMENTS heating with sulphur compounds to give the sulphide, which is roasted to form the oxide; the latter ...

THE TRANSITION ELEMENTS 407 COMPLEXES Nickel(II) forms a great variety of complexes, in which there may be either six ligands (o ...

408 THE TRANSITION ELEMENTS there is some double bonding between the nickel and carbon atoms; i.e. CO I Ni /u-V CO \\ CO CO If t ...

THE TRANSITION ELEMENTS 409 utilise a copper-protein complex called hemocyanin* as an oxygen carrier, analogous to haemoglobin i ...

410 THE TRANSITION ELEMENTS atom is surrounded by four chlorine atoms at the corners of a square and two chlorine atoms above an ...

THE TRANSITION ELEMENTS 411 or the basic carbonate of copper(II). It dissolves in acids to give solutions of copper(II) salts. I ...

412 THE TRANSITION ELEMENTS On heating the pentahydrate, four molecules of water are lost fairly readily, at about 380 K and the ...

THE TRANSITION ELEMENTS 413 tion gives a blue solid Cu(NO 3 ) 2 .N 2 O 4 ; this gives the blue anhydrous nitrate Cu(NO 3 ) 2 on ...

414 THE TRANSITION ELEMENTS Oxidation state +1 In contrast to the +2 state, copper(I) compounds are less frequently coloured and ...

THE TRANSITION ELEMENTS 41 5 white copper(I) chloride separates, but if air is present in the water, it rapidly turns blue owing ...