Chirality and ferromagnetism in NiBPO4(OH)2 containing helix edge-sharing NiO6 chains

Synthesis, Crystal Structure of a New Structure Type, and Thermal Analysis of the Ammonium Borophosphate (NH4)2[B2P3O11(OH)]

“…The bond length P–O H is 1.53 Å. P–O br (br = bridging) distances range between 1.54 and 1.56 Å, whereas P–O term (term = terminal) distances lie between 1.48 and 1.49 Å. These values correspond to typical data found for other borophosphates , . The B–O br –P angles range in a relatively large interval between 106 and 135°, whereas O–B–O and O–P–O angles lie between 103 and 112° (Ø = 110°) and 106 and 115° (Ø = 109°), respectively.…”

“…The infrared spectrum of I was recorded between 4000 and 400 cm –1 and is shown in Figure . The bands at 3344 and 1645 cm –1 can be assigned to the stretching and deformation vibrations of the hydroxyl group,, , whereas vibrations between 3310–2700 cm –1 and at 1443 cm –1 can be assigned to N–H stretching vibrations , , . BO 4 vibrations can be found at 1157, 1126, 901, 879, 569, 534, and 500 cm –1 , whereas typical PO 4 vibrations range in the region between 1230 and 400 cm –1 .…”

Synthesis, Crystal Structure, Optical, Magnetic and Thermal Properties of (NH4)2Mn[B2P3O11(OH)2]Cl

“…The bands at 3490, 3338, and 1666 cm -1 can be assigned to the stretching and deformation vibrations of the OH groups, [18,[34][35][36] whereas vibrations between 3365-2617 cm -1 and at 1423 cm -1 can be assigned to N-H stretching vibrations. [37][38][39] …”

Synthesis, structure and magnetic property of a new organo-templated mixed-valent iron(ii, iii) borophosphate

“…These bond lengths and angles are typical for borophosphates. 2,19,20 Notably, two crystallographically independent Fe atoms are in different valent states verified by bond valence calculation, as well as M€ ossbauer spectroscopic measurements that will be discussed later. The Fe(1) atom is divalent and the Fe(2) atom is trivalent; both are in an almost regular octahedral environment.…”