Lithium dioxobis[trioxoiodato(V)]vanadate, Li[VO₂(IO₃)₂]

Abstract

The title compound represents a new structure type, in which distorted VO6 octahedra are bridged by iodate groups to form infinite two-dimensional [VO2(IO3)2]- layers that are separated by octahedrally coordinated Li+ cations.

CsVO2F(IO3): An Excellent SHG Material Featuring an Unprecedented 3D [VO2F(IO3)]− Anionic Framework

“…[4] Moreover, combinations of iodates and other asymmetric units including second-order-Jahn-Teller(SOJT)-distorted d 0 transition-metal cations have resulted in a number of novel SHG-active crystals with good properties. [5][6][7][8][9][10][11][12][13][14] For metal vanadyl iodates, more than 20 different structures have been reported, [10][11][12][13][14] among which NaVO 2 (IO 3 ) 2 (H 2 O), [11b] A(VO) 2 O 2 (IO 3 ) 3 (A = K, Rb, Cs, NH 4 ), [11c,d] and a-as well as b-Ba 2 [VO 2 F 2 (IO 3 ) 2 ]IO 3 [12b] exhibit remarkably strong SHG effects.…”

“…[13a] The second class of vanadium iodates feature 0D, 1D, and 2D anionic architectures (Table S1, Supporting Information). [10][11][12] Isolated (0D) vanadium oxo/fluoro iodate anions are formed when large numbers of terminal oxides/fluorides and iodate anions are available, for example, 0D L-shaped cis-[VO 2 F 2 -(IO 3 ) 2 ] 3À polyanions in a-and b-Ba 2 [VO 2 F 2 (IO 3 ) 2 ]IO 3 (nine times the SHG intensity of KDP). Three types of 1D anionic chains have been reported…”

CsVO2F(IO3): An Excellent SHG Material Featuring an Unprecedented 3D [VO2F(IO3)]− Anionic Framework

“…A similar vanadium oxide chain of corner‐sharing VO 6 octahedra is also found in Ag 2 (VO 2 )(IO 3 ) 3 and α‐KVO 2 (IO 3 ) 2 (H 2 O), however, pairs of VO 6 octahedra in the chain are bridged by iodate groups on the same side of the chain and the remaining iodate groups are attached unidentately to the other side of the chain . There is no corner‐sharing between VO 6 octahedra in LiVO 2 (IO 3 ) 2 , and these octahedra are bridged by iodate groups to form a 2D [VO 2 (IO 3 ) 2 ] − layer with four‐membered V 2 I 2 rings and twelve‐membered V 6 I 6 rings . The 3D [VO 2 F(IO 3 )] − framework in CsVO 2 F(IO 3 ) can also be related to the 0D [VO 2 F 2 (IO 3 ) 2 ] 3− in α‐ and β‐Ba 2 [VO 2 F 2 (IO 3 ) 2 ]IO 3 : one terminal F − in 0D [VO 2 F 2 (IO 3 ) 2 ] 3− replaced by a terminal oxide anion forms 0D [VO 3 F(IO 3 ) 2 ] 3− with the same shape, and when neighboring units are arranged in an antiparallel fashion along the c ‐axis, corner‐sharing of the two axial oxide anions leads to the formation of a 1D [VO 2 F(IO 3 ) 2 ] 2− chain (Figure a).…”

Syntheses, Crystal Structures, and Properties of Two Quaternary Selenite/Tellurite‐Nitrates with Formula of Bi(SeO3)(NO3) and Bi3(μ3‐OH)(TeO3)3(NO3)2

“…The SHG responses for Bi 3 (μ 3 ‐OH)(TeO 3 ) 3 (NO 3 ) 2 is weak, perhaps because the dipole moments of these NLO active units ( BiO 7 , TeO 4 and NO 3 ) have been mostly cancelled out in this compound (Table S3), resulting in the observation of weak SHG signal. Thus, the local dipole moments for the BiO 7 , TeO 4 and NO 3 polyhedra within a unit cell for Bi 3 (μ 3 ‐OH)(TeO 3 ) 3 (NO 3 ) 2 were calculated by using a method reported earlier . With the lone‐pair polyhedra, the lone‐pair is given a charge of −2 and is localized 0.98 Å and 1.25 Å from the Bi(III) and Te (IV) cations, respectively .…”