Tetra amido

Chemical structure of a tetra amido macrocyclic ligand... 

FIGURE 3.12 Tetra-amido ligands and nonheme iron(IV) oxo synthetic complexes. 

Other kinds of nonmetallocene complexes based on early transition metals (mainly Ti and Zr) containing dibenzyl-chelated diamido dipyrrole [19] or tetra-amido tetrapyrrole... 

Compounds containing A1—Bonds.—Alkaline tetra-amido-aluminate and -gallate crystals may be prepared by means of ammonothermal synthesis. In the MAl(NHa)4 series (M = Na, K, or Cs) the structures are built up from AKNHg) tetrahedra and M+ ions [r(AlN) 1.85 A average], while NaGa(NHa)4 is isotypic with NaAl(NHa)4. ... 

Pluth MD, Lippard SJ (2012) Reversible binding of nitric oxide to an Fe(III) complex of a tetra-amido macrocycle. Chem Commun (Camb) 48 11981-11983... 

V"-Fluoren-9-ylmethoxycarbonyl-3-0- 2-acetamido-2-deoxy-3,4-0-isopropyKdene-6-0-[methyl(5-acet-amido-4,7,8,9-tetra-0-acetyl-3,5,-dideoxy-D-glycero-a-galacto-2-nonulopyranosyl)onate]-a-D-galacto-pyranosylJ-L-threonme Benzyl Ester (84) 11251... 

Parameter Copper tetra-phenylporphin Copper tetra-phenyl(pival-amido) porphin Tetramethyl ether of copper hemato-IX porphyrin... 

H. Schiff claimed to have prepared PO(NH2)3, or phosphoryl triamide, by slowly leading a current of dry ammonia into cold phosphoryl chloride until the mass was quite sat. The ammonium chloride was washed from the product of the action with cold or warm water, and phosphoric triamide remained as a snow-white powder. H. Schiff claimed that the compound is scarcely attacked by boiling water, an aq. soln. of potassium hydroxide, or dil. acids but that it is slowly attacked by cone, acids. When fused with potassium hydroxide, ammonium and potassium phosphates are formed and when heated out of contact with air, ammonia, and phosphoryl nitrile are produced PO(NH2)3=PON-fi2NH3. J. H. Gladstone, A. Mente, and H. N. Stokes failed to confirm the preparation of H. Schiff s triphosphoramide. According to J. H. Gladstone, the third atom of chlorine cannot be replaced by an amido-group at any temp, below that at which further decomposition occurs (300°). The product of the action of ammonia on phosphoryl chloride is a mixture of ammonium salts of amido- and imido-tetra-phosphoric acids. 

Though it is not clear that the above-mentioned reactions are the outer-sphere electron transfer reaction, the stereoselectivity of the outer-sphere electron transfer reaction was clearly reported in the reaction between di- x-oxo-p,-(propylene diamine tetra acetato)bis[oxo molybdate(V)] and x-amido- ui-hyper oxo-bis-[bis(ethylene diamine)cobalt(III)] [see Eq.(4)] [4] ... 

The tetrakis(dialkylphosphido) complexes, An(PPP)4 (An = Th, U) PPP = P(CH2CH2P(CH3)2), were prepared by reacting AnC with four equivalents of the lithium or potassium salt of the PPP tetra-anion. The stmcture of these compounds shows triangulated dodecahedra distorted toward bicapped trigonal prisms. These complexes represent one of the first actinide systems containing exclusively metal-phosphorus bonds. These complexes are known to undergo insertion reactions as seen in actinide amido compounds. ... 

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