2000
DOI: 10.1002/1521-3749(200009)626:9<1992::aid-zaac1992>3.0.co;2-g
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Darstellung und Kristallstruktur der bekannten Zintl-Phasen Cs3Sb7 und Cs4Sb2

Abstract: Professor Ulrich Mu È ller zum 60. Geburtstag gewidmet.Inhaltsu È bersicht. Cs 3 Sb 7 und Cs 4 Sb 2 wurden aus den Elementen dargestellt und ihre Kristallstrukturen auf der Basis von Ro È ntgeneinkristalldaten ermittelt. Cs 3 Sb 7 kristallisiert monoklin in der Raumgruppe P2 1 /c (a = 1605.7(1) pm, b = 1571.1(1) pm, c = 2793.9(2) pm, b = 96.300(2)°, Z = 16) und entha È lt Anionen Sb 7 3± . In der Kristallstruktur von Cs 4 Sb 2 (orthorhombisch, Raumgruppe Pnma, a = 1598.5(3) pm, b = 631.9(2) pm, c = 1099.5(2) p… Show more

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Cited by 40 publications
(12 citation statements)
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References 6 publications
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“…First, like it was suggested elsewhere [6], we propose that because of their higher electronegativity, the Te atoms occupy the 12d sites, so that the interactions between them are minimized. Furthermore, the shortest distance between the Sb(2) atoms can be considered as a covalently bonded dimer Sb 2 4− , with a Sb-Sb bond of 2.91Å that compares very well with 2.923Å, distance found in the dimers that compose the structure of Ca 4 Sb 2 [14]. All the other Sb-Sb distances, longer than 3.1Å, are neglected since they are well outside the range for antimony-antimony single bonds [15].…”
Section: Resultsmentioning
confidence: 99%
“…First, like it was suggested elsewhere [6], we propose that because of their higher electronegativity, the Te atoms occupy the 12d sites, so that the interactions between them are minimized. Furthermore, the shortest distance between the Sb(2) atoms can be considered as a covalently bonded dimer Sb 2 4− , with a Sb-Sb bond of 2.91Å that compares very well with 2.923Å, distance found in the dimers that compose the structure of Ca 4 Sb 2 [14]. All the other Sb-Sb distances, longer than 3.1Å, are neglected since they are well outside the range for antimony-antimony single bonds [15].…”
Section: Resultsmentioning
confidence: 99%
“…Heavier analogs of such clusters with As and Sb are also known [16][17][18]. Similar to other intermetallics, the electronic structures of polyphosphides can be rationalized by application of the Zintl concept [19,20].…”
Section: Open Accessmentioning
confidence: 99%
“…Thermoanalytische Untersuchungen zur Verbindungsbildung von Antimon mit den schweren Alkalimetallen K, Rb und Cs (A) wurden von Dorn und Klemm [1] bereits in den sechziger Jahren des letzten Jahrhunderts durchgeführt. Die Kristallstrukturen der in diesen Untersuchungen beobachteten Antimonide sind Ϫ mit der Ausnahme der Titelverbindung RbSb 2 und von Rb 5 Sb 2 Ϫ mittlerweile sämtlich bekannt: Die A-reichsten Phasen A 3 Sb [2Ϫ5] enthalten isolierte Sb 3Ϫ -Anionen, eine Verbindung A 4 Sb 2 mit Hanteln [Sb 2 ] 4Ϫ als Bauelement ist nur für A ϭ Cs bekannt [6], die Verbindungen A 5 Sb 4 [7] mit [Sb 4 ]-Kettenstücken sind die einzigen Alkalimetall-Antimonide, die dem Zintl-Konzept nicht folgen. Ketten zweibindiger [Sb] Ϫ -Atome, die in drei unterschiedlichen Packungen (LiAs-, NaP-und β-CsSb-Typ) vorliegen können, bilden die Anionen in den elektronenpräzisen Monoantimoniden ASb [8Ϫ10, 6].…”
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