𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Tetraammonium hexa­hydrogen hexamolybdonickel­ate(II) tetrahydrate, (NH4)4[H6NiMo6O24]·4H2O

✍ Scribed by Lee, Uk ;Joo, Hea-Chung ;Kwon, Jae-Sam

Book ID
104479057
Publisher
International Union of Crystallography
Year
2001
Tongue
English
Weight
271 KB
Volume
58
Category
Article
ISSN
1600-5368

No coin nor oath required. For personal study only.

✦ Synopsis

Crystals of the title compound, (NH 4 ) 4 [H 6 NiMo 6 O 24 ]Á4H 2 O containing the well known B-type Anderson±Evans heteropolyoxometalate, were obtained by recrystallization of powder (NH 4 ) 4 [H 6 NiMo 6 O 24 ]ÁnH 2 O. The anion has the Ni atom at an inversion center and has close to 3m symmetry, with NiÐO bond lengths in the range 2.046 (5)±2.052 (6), MoÐO bond lengths in the ranges 1.701 (6)±1.720 (6), 1.932 (6)±1.954 (7) and 2.216 (6)±2.258 (5) A Ê .

📜 SIMILAR VOLUMES

Studies on humidity sensing properties o
Studies on humidity sensing properties of ammonium heptamolybdate tetrahydrate (NH4)6[Mo7O24] · 4H2O
✍ S.A. Hashmi 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 407 KB

The material Ammonium heptamolybdate tetrahydrate has been shown to be an ionic conductor with r,<,,, -0.97. Its conductivity is strongly humidity dependent dominated by surface ion transport. This effect has been utilized to develop a humidity sensor. A linear change of -2000 times in the resistanc