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Table 1 Force constant, Coordination number, Inter-atomic Distances (Å) and Angles (deg) and Force constant values (N/cm) for Orthorhombic PrMnO3

From: Zone center phonons of the orthorhombic RMnO3(R = Pr, Eu, Tb, Dy, Ho) perovskites

Force constant K1 K2 K3 K4 K5 K6 K7 K8 K9 H1 H2 H3 H4 H5 H6 H7 H8
Coord. Number. 8 8 8 4 8 4 8 4 8 8 8 4 4 8 8 7 8
Distance/Angle 1.91 1.95 2.21 2.36 2.40 2.48 2.62 3.17 3.52 89 67 110 90 56 66 160 120
Force constant values 0.597 0.535 0.950 0.456 0.019 0.311 0.382 0.335 0.598 0.432 0.413 0.404 0.373 0.338 0.329 0.136 0.022