Crystal structure of 3,4-dimethyl-phenyIammonium cyclotetraphosphate, (C8H12N)4(P4O12)

Structural Characterization of a New Organic Cyclotetraphosphate, [p-ClC6H4NH3]4P4O12

“…Nevertheless, this distortion is commonly observed in P4O12 groups having Ci symmetry. 7,8 On the other hand, the local arrangement around the PO4 tetrahedron and the P-O-P angles are quite similar to those observed in other condensed phosphoric anions. 9 In the crystal structure there are two independent p-chloroanilinium cations that are associated with phosphoric entities through electrostatic interactions and hydrogen bonds involving hydrogen atoms of -NH3.…”

Synthesis and structural investigation of a new cadmium cyclohexaphosphate Cd[3,4-(CH3)2C6H5NH3]4P6O18·6H2O

“…Inside this arrangement, the Cd atom, lying in an inversion center, is octahedrally coordinated by four oxygen atoms from two adjacent P 6 [13]. The two crystallography distinct 3,4-xylidinium cations involved in this structure, exhibit C-C and C-N distances in the range usually found for this molecule [14,15] and the C-C-C and C-C-N angles are similar to those expected for sp 2 hybridization (Table 4). These groups are almost planar with mean (2) deviation of ± 0.007 and ± 0.032 Å, and they could be considered parallels, with a dihedral angle of 6.02 • .…”