The synthesis and structure of La 5 Pb 3 Z, Z  N, O. Interstitial derivatives of a Cr 5 B 3 ‐Type structure | Zendy

Guloy Arnold M. | Zendy; Corbett John D. | Zendy

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The synthesis and structure of La 5 Pb 3 Z, Z  N, O. Interstitial derivatives of a Cr 5 B 3 ‐Type structure

Author(s) -

Guloy Arnold M.,

Corbett John D.

Publication year - 1992

Publication title -

zeitschrift für anorganische und allgemeine chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.354

H-Index - 66

eISSN - 1521-3749

pISSN - 0044-2313

DOI - 10.1002/zaac.19926161010

Subject(s) - crystal structure , crystallography , derivative (finance) , chemistry , oxide , nitrogen , tetrahedron , type (biology) , oxygen atom , structure type , stereochemistry , molecule , organic chemistry , financial economics , economics , ecology , biology

Suitable proportions of La, La 4 Pb 3 and La 2 O 3 or LaN reacted in pressed pellets at 1050°–1250°C result in high yields of the title compounds. Single crystal X‐ray studies of the oxide show it to be an isopointal, interstitial derivative of the Cr 5 B 3 structure (I4/mcm, Z = 4, a = 8.6895(2) Å, c = 14.540(1) Å, R/R w = 3.0/3.5%). Oxygen or nitrogen atoms are bound in (La2) 4 tetrahedra within chains along (0, 1 /2, z). Negligible dimerization of the type characteristic of Cr 5 B 3 is indicated by the Pb2Pb2 separation, 3.550(1) Å. The structure is compared with other related examples.

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