OXYGEN COORDINATION AND THE Si-O BOND G. E. BnowN AND G. V. Grnns,

The mean Si-O bond length in a silicate has been found to depend, in part, on the average cation coordination of oxygen and the predicted s-character of the metal-oxygen bonds. Individual Si-O(nbr) bond lengths in iour C2fm amphiboles, which apparently deviate from this correlation, are discussed in terms of d-p r-bonding and the average electronegativity of the other cations bonded to O(nbr). A correlation exists between the Si-O(nbr) bond length in these amphiboles and the average electronegativity of the nontetrahedral cations bonded to O(nbr); longer Si-O(nbr) bonds are associated with the more electronegative cations.

[1]  G. Bnown,et al.  THE NATURE AND THE VARIATION IN LENGTH OF THE SiO AND AIO BONDS IN FRAMEWORK SILICATES , 2007 .

[2]  L. Finger.  THE CRYSTAL STRUCTURE AND CATION DISTRIBUTION OF A GRUNERITE , 2006 .

[3]  B. Jerslev.  Effective Ionic Radii in Oxides and Fluorides* , 1969 .

[4]  J. Papike,et al.  Bonding in eight ordered clinopyroxenes isostructural with diopside , 1968 .

[5]  G. L. Glen,et al.  Chemical Bonding Studies of Silicates and Oxides by X‐Ray K‐Emission Spectroscopy , 1968 .

[6]  C. Prewitt.  Refinement of the structure of pectolite, Ca2NaHSi3O9 , 1967 .

[7]  D. Cruickshank,et al.  Refinement of the structure of hemimorphite , 1967 .

[8]  L. Ehrenberg,et al.  The Crystal Structure of NaIn(SiO3)2. , 1967 .

[9]  M. Slaughter.  Chemical binding in silicate minerals Part I. Model for determining crystal-chemical properties , 1966 .

[10]  W. A. DOLLASE,et al.  Reinvestigation of the structure of low cristobalite , 1965 .

[11]  A. N. Lazarev,et al.  Polymorphism of molecules and complex ions in oxygen compounds of silicon and phosphorus , 1964 .

[12]  N. Niizeki,et al.  The redetermination and refinement of the crystal structure of rhodonite, (Mn,Ca)SiO8 , 1964 .

[13]  E. A. Robinson.  CHARACTERISTIC VIBRATIONAL FREQUENCIES OF OXYGEN COMPOUNDS OF SILICON, PHOSPHORUS, AND CHLORINE: CORRELATION OF STRETCHING FREQUENCIES AND FORCE CONSTANTS WITH BOND LENGTHS AND BOND ORDERS , 1963 .

[14]  S. W. Bailey,et al.  Second review of Al–O and Si–O tetrahedral distances , 1963 .

[15]  R. Gillespie,et al.  THE SULPHUR–OXYGEN BOND IN SULPHURYL AND THIONYL COMPOUNDS: CORRELATION OF STRETCHING FREQUENCIES AND FORCE CONSTANTS WITH BOND LENGTHS, BOND ANGLES, AND BOND ORDERS , 1963 .

[16]  R. J. Gillespie,et al.  The valence-shell electron-pair repulsion (VSEPR) theory of directed valency , 1963 .

[17]  W. Zachariasen,et al.  The crystal structure of cubic metaboric acid , 1963 .

[18]  W. Noll.  The Silicate Bond from the Standpoint of Electronic Theory , 1963 .

[19]  E. Radoslovich,et al.  The structure of anorthite, CaAl2Si2O8. II. Description and discussion , 1962 .

[20]  M. Buerger,et al.  The determination and refinement of the structure of narsarsukite, Na2TiOSi4O10 , 1962 .

[21]  B. Stoicheff.  The variation of carbon-carbon bond lengths with environment as determined by spectroscopic studies of simple polyatomic molecules , 1962 .