TY - JOUR

T1 - Encapsulation effect and its influence on bond-valence parameters

AU - Krivovichev, S. V.

PY - 1999

Y1 - 1999

N2 - Structural geometry of anion-centered tetrahedra [XA4] (X = O, N; A = Pb, REE, etc.) is controlled by both A ⋯ A interactions and X-A bonds. If the A4 cage has an interstition smaller than the X atom, the encapsulation of X into A4 results in a bond strain caused by stretching of A ⋯ A contacts and compressing of X-A ones. As a consequence, A-X bond-valence parameters for encapsulated X atoms are decreased in comparison with standard ones.

AB - Structural geometry of anion-centered tetrahedra [XA4] (X = O, N; A = Pb, REE, etc.) is controlled by both A ⋯ A interactions and X-A bonds. If the A4 cage has an interstition smaller than the X atom, the encapsulation of X into A4 results in a bond strain caused by stretching of A ⋯ A contacts and compressing of X-A ones. As a consequence, A-X bond-valence parameters for encapsulated X atoms are decreased in comparison with standard ones.

UR - http://www.scopus.com/inward/record.url?scp=0000412131&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0000412131

VL - 214

SP - 371

EP - 372

JO - Zeitschfrift fur Kristallographie

JF - Zeitschfrift fur Kristallographie

SN - 0044-2968

IS - 7

ER -