In molten state, the dimer Ga2Cl4 exists as Ga+ [GaCl4]- Ga+ [Ga2Cl4] GaCl2 GaCl

Question

In molten state, the dimer Ga2Cl4 exists as Ga+ [GaCl4]- Ga+ [Ga2Cl4] GaCl2 GaCl2 All In Roman spectrum of Osf4, a broad band has been observed due to Jahn-Teller effect, the band is v1 v2 v3 v4 [Hint. Because the 5d2 non bonding electrons gives a five-fold degenerated ground electronic state]. When the ligands are bidentate, six coordinate octaherdral complexes have lower point group symmetry, which is D3d D4h C2v C4v In traisepthyen diammine Co(III) species, Co(en) has the point group Oh Td D3d D4d Cis and trans XY4Z2 type molecules have respective point group Oh, Td C2v, D4h C3v, D3h None The ligands which have two or more potential donor atoms and which may use either of these bonding sites in forming coordination compounds arc termed as Ambidentate ligands Bidentate ligands Multidentate ligands Hexadentate ligands The infrared spectrum of a certain AX2 molecule shows bands at 585. 1285 and 2225 cm-1 The latter two frequencies are Raman polarised. The structure of the molecule is Square planar Linear Tetrahedral Octahedral [Hint. Two stretching bands (1285, 2225 cm-1 are Raman polarised Linear X-Y-Y structure is likely Molecule is N2O] An XY4Z molecule tan have Z in the axial or equatorial position of a trigonal bipyraimdal .structure The two can be distinguished by normal vibrations since Axial Z C has 4 A1 + 4E mode Equatorial Z: C has 5A1 + 3B1 3B2 A2 mode None The v(C = O) modes of Mn2(CO)10. point group D4d are classified as 2A1 + 2B2 + E1 + E2 +E3.The infrared active modes consistent with its structure are 2A. + E2 2B2-E1 2A1 + E3 E1 + E3 The C = C stretching frequency is forbidden .n ethylene But some complexes containing coordinated ethylene show, an infrared band near 1600 cm-1 because the symmetry of C2H4 is C2 C3 D3h D2h

Explanation / Answer

1) a
2) b
3) a
4) c
5 b
6) a
7) b
8) c
9) b
10) a

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