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The title compound [N(CH 3) 4] 4 [H 5PMo 5V 9O 42 ] ·3.5H 2O was synthesized by hydrothermal method and its structure was determined with single crystal X ray analysis. The cluster anion is a bicapped Keggin polyanion, two vanadium atoms are distributed at two capping metal atom positions. The crystal is monoclinic, space group C2/c with a=1.284 8(4) nm, b=2.366 4(4) nm, c=2.113 6(4) nm, β= 90.69(2)° , V=6.425(4) nm 3, Z=4, D c=2.07 g5cm -3 , R=0.066, R w=0.069, S=1.33, {(Δ/σ) max =}0 04, {(Δρ) max =}91 e·nm -3 .
The title compound [N (CH 3) 4] 4 [H 5PMo 5V 9O 42] · 3.5H 2O was synthesized by hydrothermal method and its structure was determined with single crystal X ray analysis. The cluster anion is a bicapped Keggin polyanion, two The crystal is monoclinic, space group C2 / c with a = 1.284 8 (4) nm, b = 2.366 4 (4) nm, c = 2.113 6 = 90.69 (2) °, V = 6.425 (4) nm 3, Z = 4, D c = 2.07 g 5 cm -3, R = 0.066, R w = 0.069, S = 1.33, σ) max = } 0 04, {(Δρ) max = } 91 e · nm -3.