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Crystal structure of the inter-metallic compound SrCdPt.

Gulo F, Köhler J - Acta Crystallogr Sect E Struct Rep Online (2014)

Bottom Line: The Pt atoms form cadmium-centred tetra-hedra that are condensed into a three-dimensional network with channels parallel to the b-axis direction in which the Sr atoms are located.The latter are bonded to each other in the form of six-membered rings with chair conformations.All atoms in the SrCdPt structure are situated on a mirror plane.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemical Education, Sriwijaya University, Inderalaya, Ogan Ilir 30662, South Sumatra, Indonesia.

ABSTRACT
The crystal structure of the title compound, strontium cadmium platinum, adopts the TiNiSi structure type with the Sr atoms on the Ti, the Cd atoms on the Ni and the Pt atoms on the Si positions, respectively. The Pt atoms form cadmium-centred tetra-hedra that are condensed into a three-dimensional network with channels parallel to the b-axis direction in which the Sr atoms are located. The latter are bonded to each other in the form of six-membered rings with chair conformations. All atoms in the SrCdPt structure are situated on a mirror plane.

No MeSH data available.


View of zigzag chains of cadmium-centred tetra­hedra of Pt atoms forming channels along the b-axis direction in the structure of SrCdPt.
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fig2: View of zigzag chains of cadmium-centred tetra­hedra of Pt atoms forming channels along the b-axis direction in the structure of SrCdPt.

Mentions: In the compounds of the TiNiSi structure family, the metals listed first in the formula are linked to each other, forming six-membered rings in chair, half-chair, or boat conformations. The adopted conformation is not a function of the electron count, but is due to the nature of the respective metal (Landrum et al., 1998 ▶). In the SrCdPt structure, the strontium atoms construct six-membered rings with chair conformations and Sr—Sr distances of 3.870 (2) Å, which is significantly shorter than the sum of the covalent radii of 4.30 Å (Emsley, 1999 ▶), indicating strong bonding inter­actions between them (Fig. 1 ▶). The existence of such strong Sr—Sr bonds is not noticeable in SrCd4Pt2 (Samal et al., 2013 ▶). The platinum atoms in the structure of SrCdPt form zigzag chains of edge-sharing cadmium-centred tetra­hedra parallel to the b-axis direction. These chains are condensed via common corners with adjacent chains, building up the three-dimensional network with channels parallel to the b-axis direction in which the Sr atoms reside, as illustrated in Fig. 2 ▶.


Crystal structure of the inter-metallic compound SrCdPt.

Gulo F, Köhler J - Acta Crystallogr Sect E Struct Rep Online (2014)

View of zigzag chains of cadmium-centred tetra­hedra of Pt atoms forming channels along the b-axis direction in the structure of SrCdPt.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4257373&req=5

fig2: View of zigzag chains of cadmium-centred tetra­hedra of Pt atoms forming channels along the b-axis direction in the structure of SrCdPt.
Mentions: In the compounds of the TiNiSi structure family, the metals listed first in the formula are linked to each other, forming six-membered rings in chair, half-chair, or boat conformations. The adopted conformation is not a function of the electron count, but is due to the nature of the respective metal (Landrum et al., 1998 ▶). In the SrCdPt structure, the strontium atoms construct six-membered rings with chair conformations and Sr—Sr distances of 3.870 (2) Å, which is significantly shorter than the sum of the covalent radii of 4.30 Å (Emsley, 1999 ▶), indicating strong bonding inter­actions between them (Fig. 1 ▶). The existence of such strong Sr—Sr bonds is not noticeable in SrCd4Pt2 (Samal et al., 2013 ▶). The platinum atoms in the structure of SrCdPt form zigzag chains of edge-sharing cadmium-centred tetra­hedra parallel to the b-axis direction. These chains are condensed via common corners with adjacent chains, building up the three-dimensional network with channels parallel to the b-axis direction in which the Sr atoms reside, as illustrated in Fig. 2 ▶.

Bottom Line: The Pt atoms form cadmium-centred tetra-hedra that are condensed into a three-dimensional network with channels parallel to the b-axis direction in which the Sr atoms are located.The latter are bonded to each other in the form of six-membered rings with chair conformations.All atoms in the SrCdPt structure are situated on a mirror plane.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemical Education, Sriwijaya University, Inderalaya, Ogan Ilir 30662, South Sumatra, Indonesia.

ABSTRACT
The crystal structure of the title compound, strontium cadmium platinum, adopts the TiNiSi structure type with the Sr atoms on the Ti, the Cd atoms on the Ni and the Pt atoms on the Si positions, respectively. The Pt atoms form cadmium-centred tetra-hedra that are condensed into a three-dimensional network with channels parallel to the b-axis direction in which the Sr atoms are located. The latter are bonded to each other in the form of six-membered rings with chair conformations. All atoms in the SrCdPt structure are situated on a mirror plane.

No MeSH data available.