Strontium crystal structure

As discussed in more detail in Section 2.02.4.2.2.(iii), almost all the metallocenes of calcium, strontium, or barium are bent, even when unsolvated. The only exception to this so far is the sterically crowded (CsPr Ba 152 (Figure 79),348 whose X-ray crystal structure reveals a linear geometry with Ba-C = 2.997(4)A. All three... 

Yoshioka K, Petrykin V, Kakihana M, Kato H, Kudo A (2005) The relationship between photocatalytic activity and crystal structure in Strontium tantalates. J Catal 232 102-107... 

This chapter discusses the coordination chemistry of selected main group and transition metal complexes with dipicolinic acid, its analogues, and derivatives as ligands. Selected elements will be presented in terms of increasing atomic number. Out of all of the alkali metals, there has been a report of the crystal structure of sodium coordinated to dipicolinic acid. Calcium, magnesium, and strontium, three alkaline earth metals, are popular metal centers, which have been reported in the literature to be coordinated to dipicolinic acid or its analogues. ... 

Prior to the previous edition of this book, no examples of substituted strontium amides had been well characterized. Even now, only a few strontium amide crystal structures are known and have been briefly reviewed in the context of more general aspects of the chemistry of group 2 metal compounds. ... 

STRONTIUM. [CAS 7440-24-6], Chemical element, symbol Sr, at. no. 38, at. wt. 87.62. periodic table group 2, mp 769°C, bp 1384°C, density 2.54 g/cm- (20°C). Below 215°C, elemental strontium has a face-centered cubic crystal structure between 215-605 C. a hexagonal close-packed crystal structure and above 605°C, a body-cen tered cubic crystal structure. 

Figure 9.3 Schematic crystal structure of SrNiN. Open, filled and shaded circles represent nitrogen, nickel and strontium atoms, respectively.

M. Von Glehn, P. Kierkegaard, R. Norrestam, O. Ronnquist, and P. E. Werner, The crystal structure of calcium and strontium 3-deoxy-2-C-hydroxymethyl-D-erythro-pentonate and some extended Hueckel calculations on the corresponding acid, Chem. Commun., 6 (1967) 291-292. 

Strontium metaborate SrO B203 4H2O has been well characterized, the crystal structures of both monoclinic (228) and triclinic (321) forms indicating the formula Sr[B(OH) J2. It is readily formed by reacting soluble strontium salts with sodium metaborate solutions at a pH in excess of 11. 

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