硼砂矿晶体结构中五硼酸根多阴离子，NaCaB5O6(OH)6·5H2O。

Pentaborate Polyanion in the Crystal Structure of Ulexite, NaCaB5O6(OH)6{middle dot}5H2O.

出版信息

Science. 1964 Sep 18;145(3638):1295-6. doi: 10.1126/science.145.3638.1295.

DOI:10.1126/science.145.3638.1295

PMID:17802011

Abstract

Triclinic ulexite crystals contain isolated borate polyanions B(5)O(6)(OH)(6) related to the well known pentaborate polyanion B(5)O(6)(OH)(4) by addition of two hydroxyl groups to two opposite B-O triangles. The isolated ulexite polyanions form the B(5)O(7)(OH)(4)(3n-) chains previously found in crystals of the related mineral probertite, NaCaB(5)O(7)(OH)(4).3H(2)O.

摘要

三方钠硼石晶体包含孤立的硼酸盐多阴离子B(5)O(6)(OH)(6)，通过向两个相反的 B-O 三角形添加两个羟基基团，与熟知的五硼酸盐多阴离子B(5)O(6)(OH)(4)有关。孤立的钠硼石多阴离子形成了B(5)O(7)(OH)(4)(3n-)链，此前在相关矿物钠钙硼石 NaCaB(5)O(7)(OH)(4).3H(2)O 的晶体中发现过这种链。