**2.8 Gadolinium(III) Trifluoromethanesulfonate**

**Alternate Name:** gadolinium(III) triflate.

**Physical Data:** anhydrous, *d* = 7.07 g cm<sup>−</sup><sup>3</sup> .

**Solubility:** soluble in water, ethanol, THF, acetone, acetonitrile, and other polar organic solvents.

**Form Supplied in:** commercially available as an anhydrous, white to offwhite powder.

### **Figure 7.**

*Rare Earth Elements and Their Minerals*

**gold-coated gadolinium nanocrystals**

potential T1 MRI differentiate specialist [11].

**capture therapy**

degradation of methyl orange as a pollution of water were explored, and the results exhibited the efficacy of both products in eliminating of the organic pollutant [10].

**2.5 Alkalide reduction: synthesis and characterization of gold nanoparticles and** 

As of late, air, moisture and acid stable gold-covered gadolinium (Gd@Au) nanoparticles were set up by alkalide decrease. The union brought about center shell nanocrystals with a tight size appropriation. The Gd center could make the nanocrystals brilliant sub-atomic MRI differentiate specialists and give various alternatives to treatment of tumors, including 157Gd neutron catch treatment, photon initiation treatment, synchrotron stereotactic radiotherapy, and 159Gd radionuclide treatment. The Au shell anticipates Gd center from oxidation renders them stable even at low pH, which conceivably averts filtering and bio-inconsistency. T1 and T2 relaxivities demonstrate that Gd@Au nanocrystals are an extremely encouraging

**2.6 Synthesis of a carborane gadolinium – DTPA complex for boron neutron** 

Hydrolysis of the ethyl esters in 1 was done with LiOH in fluid methanol pursued by treatment with weakened hydrochloric corrosive (1N) to bear the cost of

**38**

**Figure 6.**

*Formation of the desired Gd – Carborane complex 3 in quantitative yield.*

*(Top) view of the three crystallographically independent Gd centers in 1–AuCl4: Gd1, Gd2 and Gd3. Gd1 has a coordinated water molecule (in addition to 7 bridging bipyNO ligands), Gd2 has a terminal bipyNO ligand (in addition to 7 bridging bipyNO ligands), and Gd3 is coordinated to 8 bipyNO ligands that serve as bridges between Gd centers. (Bottom) close view of the coordination environment of Gd1 and Gd2, highlighting the presence of a terminal bipyNO ligand (in green) and a coordinated water molecule (in pink).*

**Figure 8.**

*Structural units of the different polyoxometalates (POMs) used for anion exchange studies.*

**Preparative Method:** the reagent is prepared by heating gadolinium oxide(Gd2O3) with triflic acid in water (1/1, v/v) at 100°C for 2 h. The hydrate thus prepared is extensively heated under vacuum (200°C/0.5 mmHg for 40 h) to give the anhydrous salt.

**Purification:** the reagent is typically used in anhydrous form as prepared above.

**Handling, Storage and Precautions:** skin, eye, and respiratory tract irritant. The anhydrous salt is air and water stable, hygroscopic, and should be stored in a tightly closed container in a dry and well-ventilated place. Gadolinium triflate is reported to be nonexplosive and nonflammable [14].
