نتایج جستجو برای: polyoxomolybdate
تعداد نتایج: 62 فیلتر نتایج به سال:
A polyoxotetradecamolybdate cluster [Mo(14)O(38)(OAc)(6)](2-), which has a lacunary core of the Wells-Dawson structure, is isolated by the reduction of [Mo(6)O(19)](2-). The Mo(14) core is comprised of a mixed valence of [Mo(V)(4)Mo(VI)(10)], exhibiting multi-step reversible redox processes that experience both oxidation and reduction.
A 1,3-dipolar cycloaddition reaction taking place quantitatively between propiolic acid "guests" and azide functions previously attached to binding sites within the cavity of a {Mo(132)}-type Keplerate reproducibly gives a 2 : 1 ratio of 1,4- and 1,5-triazoles.
A family of virtually isostructural tetra-capped ε-Keggin-type polyoxomolybdate(V) cluster compounds, [Mo12(V)O28(μ(2)–OH)10(μ(3)–OH)2{M(II)(H2O)3}4]·nH2O ({M4(II)Mo12(V)}, M = Ni, Co), exhibits magnetic-field-dependent optical response in their electronic absorption spectra in the 0–33 T range. On the basis of Effective Hamiltonian Crystal Field calculations, we find that the observed field-in...
Polyoxometalate (POM) chemistry has recently offered excellent examples of single ion magnets (SIMs) and molecular spin qubits. Compared with conventional coordination compounds, POMs provide rigid and highly symmetric coordination sites. However, all POM-based SIMs reported to date exhibit a very limited range of possibilities for chemical processability. We present herein two new families of ...
C(1)-C(2) 1.303(18) C(1)-Sn(1) 2.245(11) C(2)-C(3) 1.37(2) C(3)-C(4) 1.41(3) C(3)-C(4') 1.42(3) C(5)-C(6) 1.331(18) C(5)-Sn(2) 2.297(13) C(6)-C(7) 1.45(2) C(7)-C(8) 1.32(3) C(7)-C(8') 1.50(2) N(1)-O(29) 1.23(2) N(1)-Mo(8) 1.668(11) N(2)-O(30) 1.06(2) N(2)-Mo(10) 1.652(10) O(1)-Mo(1) 1.687(10) O(3)-Mo(1) 1.723(10) O(4)-Mo(1) 1.890(8) O(4)-Mo(2) 1.943(9) O(6)-Mo(4) 1.853(8) O(6)-Mo(1) 1.940(8) O(...
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