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Thiocarbonates, and Related Anions

MO calculations show that CO4 and CS4, so far experimentally unknown, are capable of existence, perhaps in either molten-salt or non-aqueous media.  [Pg.173]

Yamamoto, Y. Shiro, and H. Murato, Bull. Chem. Soc. Japan, 1975, 48, 1102. [Pg.173]

Johnson and J. R. Wasson, Inorg. Nuclear Chem. Letters, 1974, 10, 891. [Pg.173]

Harrison and P. Hubberstey, in Inorganic Chemistry of the Main-Group Elements , ed. C. C. [Pg.175]

Addison, (Specialist Periodical Reports), The Chemical Society, London, 1975, Vol. 3, p. 190. [Pg.175]

A detailed study210 of the crystal structures of M2C03 (M = Li, Na, or K) between ambient temperatures and their melting points has shown that although Li2C03 has but one (monoclinic) crystalline modification, Na2C03 and K2C03 exist in three structures, with the thermal evolution  [Pg.221]

Final products BaAl204, C02 BaAla2019, C02 Ba3Al2Os, 3C02 [Pg.222]

The reaction of variously hydrated samples of CaC03 with N204 and NOC1 has been studied at temperatures up to 200 °C.220 The reaction schemes (50) and (51) have been confirmed for the two reactions that of N204 with CaC03 occurs much faster than that of NOC1. It has been [Pg.223]

Carbonates, Thiocarbonates, and Related Anions, The syntheses of carbonates, hydroxide carbonates, and oxide carbonates have been reported. Those factors which influence the crystallization of rare-earth carbonates have been investigated the carbonates were precipitated at various temperatures from aqueous solutions by using sodium carbonate (20—80 C), sodium bicarbonate (20—80 °C), trichloroacetic acid (40—120 °C), and urea (50—150 °C) as precipitants. The carbonates so formed were characterized by chemical analysis and A -ray powder diffraction techniques. It was found that they could be classified into several phases (Table 19) according to the ionic radii [Pg.276]

Lanthanite, Ln2(C0s)3,8H20 Tengerite, Ln2(C03)s,/iH20 (2 n 3) Monoxocarbonate, LnaO(C03)2,wH20 (1 n 2) Hydrated double carbonate of Na and Ln [Pg.276]

The kinetics and mechanism of the transfonnation of aragonite, CaCOs, (containing 0.025 % Na) into caldte have been investigated using d.t.a., X-my diffraction, and i.r. spectrophotometry. The transformation temperature (476 C) and the energetics of the transformation (AH = 85 kcal mol and = 98 kcal mol ), as determined from the differential thermal curves, are in approximate agreement with previously reported values. A complementary [Pg.277]

Two theoretical analyses of the electronic structures of carbonates and related species have been published. - Russian workers have reported the results of MO calculations of the isoelectronic series of oxy-anions BO , CO , and NOj. The derived data, when compared to the results of Jf-ray spectral investigations, accurately describe the principal characteristics of the spectra. Perkins has studied the electronic structure of inter alia H2CS3, CS , and CS4 using a self-consistent MO method. Perhaps the most interesting conclusion to come from the investigations is the fact that the molecule H2CS3 is shown to be quite stable. [Pg.277]


See other pages where Thiocarbonates, and Related Anions is mentioned: [Pg.220]    [Pg.173]    [Pg.220]    [Pg.173]   


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