Synthesis and structure of (NH 4 ) 12 [Mo 36 O 112 (OH) 4 (H 2 O) 10 ], the first example of the [Mo 36 O 112 ] 8− molybdate anion cluster to bear a charge of 12−
Year: 2026
Type: article
Abstract: Treatment of [Mo 7 O 24 ] 6− with 0.05 N HNO 3 at pH ∼ 1.8 in the presence of seed crystals of the ammonium salt of Mo-13 isopolymolybdate led to the formation of the title salt, which appears to represent the first reported 12− charged form of this composition. Analysis of the Mo—O—Mo bond distances obtained from single-crystal X-ray diffraction supports the formulation of the anion in the ammonium compound as [Mo 36 O 112 (OH) 4 (H 2 O) 10 ] 12− . Charge balance requires 12 ammonium counter-ions, and the presence of 26 cocrystallized water molecules gives the overall formula (NH 4 ) 12 [Mo 36 O 112 (OH) 4 (H 2 O) 10 ]·26H 2 O. This structure differs from previously reported Mo 36 isopolymolybdate phases, including K 8 [Mo 36 O 112 (H 2 O) 16 ]·36H 2 O, (H 2 bipy) 4 [Mo 36 O 112 (H 2 O) 16 ]·28H 2 O, {(CH 3 NH 3 ) 8 [Mo 36 O 112 (H 2 O) 14 ]·19H 2 O·2.1(CH 3 NH 3 ·NO 3 )} n , (CH 3 NH 3 ) 10 [Mo 36 O 112 (OH) 2 (H 2 O) 14 ]·9H 2 O, and K 10 [Mo 36 O 110 (OH) 6 (H 2 O) 12 ]·38H 2 O.
Institution: Wayne State University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $500
OpenAlex ID: W7221615103