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  5.     <title>UTas ePrints - Synthetic and X-Ray Structural Studies of Complexes formed by Metallation of Tri(1-pyrazolyl)methane by Dimethylplatinum(II)</title>
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  13.     <meta content="Canty, A.J." name="eprints.creators_name" />
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  25. <meta content="Synthetic and X-Ray Structural Studies of Complexes formed by Metallation of Tri(1-pyrazolyl)methane by Dimethylplatinum(II)" name="eprints.title" />
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  27. <meta content="259901" name="eprints.subjects" />
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  29. <meta content="Dimethylplatinum(II) forms a complex [PtMe2(tpzm)](1) with tri(1-pyrazolyl)methane (tpzm), and on heating in pyridine metallation of one pyrazole ring occurs at C(5) to form [PtMe(tpzm-H)(py)](2), which has a cis-PtC2N2 moiety and tpzm-H present as a bidentate (cyclometallated) ligand with one unco-ordinated pyrazole group to give square-planar co-ordination, Me(py)PtCNCNN. Complexes (1) and (2) react with two equivalents of PPh3 in hot pyridine to form [PtMe(tpzm-H)(PPh3)2](3), which has PPh3 both cis and trans to the methyl group. On heating slowly to 185 C complex (3)forms [Pt(tpzm-H){PPh2(C6H4)}](4), which has PPh3 ortho-metallated to give two cyclometallated ligands bound to Pt(II), NNCNCPtCCP, one forming a six-membered ring and one forming a four-membered ring. Crystal structures of complex (2) and an impurity crystal of
  30. [PtMe(tpzm-H)(py)(PPh3)].2py (5), obtained from a sample of (3), are reported. The latter complex has a cis-PtC2NP moiety, with PPh3 trans to the methyl group and pyridine trans to tpzm-H, which is bound via C(5) of a pyrazole ring only. Crystal data: (2), monoclinic, space group P2,/n, a = 15.67(1), b = 9.193(5), c = 12.082(8) A, beta = 90.22(5), and Z = 4; (5), triclinic, space group
  31. P1 bar, a = 14.526(9), b = 12.133(7), c = 11.560(6) A, alpha = 89.88(5), beta = 87.35(5), gamma = 87.66(5), and
  32. z = 2." name="eprints.abstract" />
  33. <meta content="1983" name="eprints.date" />
  34. <meta content="published" name="eprints.date_type" />
  35. <meta content="Journal of the Chemical Society, Dalton Transactions" name="eprints.publication" />
  36. <meta content="7" name="eprints.volume" />
  37. <meta content="1253-1259" name="eprints.pagerange" />
  38. <meta content="10.1039/DT9830001253" name="eprints.id_number" />
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  43.  
  44. References
  45. 1 K. D. Tau, R. Uriarte, T. J. Mazanec, and D. W. Meek, J. Am.
  46. 2 A. J. Canty, N. J. Minchin, P. C. Healy, and A. H. White, J.
  47. Chem. SOC., 1979,101, 6614.
  48. Chem. Soc., Dalton Trans., 1982, 1795.
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  50. 4 H. C. Clark and L. E. Manzer, J. Organomet. Chem., 1973, 59,
  51. 5 D. T. Cromer and J. B. Mann, Acta Crystallogr., 1968, 24, 321.
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  53. 7 R. F. Stewart, E. R. Davidson, and W. T. Simpson, J. Chem.
  54. Phys., 1965, 42, 3175.
  55. 8 ‘The X-RAY System, Version of March 1976,’ Technical
  56. Report TR-446, ed. J. M. Stewart, Computer Science Centre,
  57. University of Maryland.
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  59. 2047; G. W. Rice and R. S. Tobias, J. Am. Chem. SOC., 1977,
  60. 99, 2141.
  61. 10 N. N. Greenwood and K. Wade, J. Chem. SOC., 1960,1130; N. S.
  62. Gill, R. H. Nuttall, D. E. Scaife, and D. W. A. Sharp, J. Inorg.
  63. Nucl. Chem., 1961, 18, 79; S. Akyuz, A. B. Dempster, R. L.
  64. Morehouse, and S. Suzuki, J. Mol. Struct., 1973, 17, 105.
  65. 11 E. 0. Greaves, R. Bruce, and P. M. Maitlis, Chem. Commun.,
  66. 1967, 860.
  67. 12 L. J. Bellamy, ‘ The Infrared Spectra of Complex Molecules,’
  68. 3rd edn., Chapman and Hall, London, 1975.
  69. 13 M. I. Bruce, Angew. Chern., Int. Ed. Engl., 1977, 16, 73.
  70. 14 M. A. Bennett and D. L. Milner, Chem. Commun., 1967, 581;
  71. W. Keim, J. Organonlet. Chem., 1968, 14, 179; J. J. Levison and
  72. S. D. Robinson, J. Chem. SOC. A, 1970, 639; E. W. Ainscough,
  73. S. D. Robinson, and J. J. Levison, ibid., 1971, 3413.
  74. C14.
  75. 411.
  76. 15 I. Omae, Chem. Rev., 1979,79,287.
  77. 16 C. E. Jones, B. L. Shaw, and B. L. Turtle, J. Chem. Soc., Dalton
  78. Trans., 1974,992; N. D. Cameron and M. Kilner, J. Chem. Soc.,
  79. Chem. Commun., 1975, 687." name="eprints.referencetext" />
  80. <meta content="Canty, A.J. and Minchin, N.J. and Patrick, J.M. and White, A.H. (1983) Synthetic and X-Ray Structural Studies of Complexes formed by Metallation of Tri(1-pyrazolyl)methane by Dimethylplatinum(II). Journal of the Chemical Society, Dalton Transactions, 7 . pp. 1253-1259. ISSN 1477-9226" name="eprints.citation" />
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  83. <meta content="Synthetic and X-Ray Structural Studies of Complexes formed by Metallation of Tri(1-pyrazolyl)methane by Dimethylplatinum(II)" name="DC.title" />
  84. <meta content="Canty, A.J." name="DC.creator" />
  85. <meta content="Minchin, N.J." name="DC.creator" />
  86. <meta content="Patrick, J.M." name="DC.creator" />
  87. <meta content="White, A.H." name="DC.creator" />
  88. <meta content="259901 Organometallic Chemistry" name="DC.subject" />
  89. <meta content="Dimethylplatinum(II) forms a complex [PtMe2(tpzm)](1) with tri(1-pyrazolyl)methane (tpzm), and on heating in pyridine metallation of one pyrazole ring occurs at C(5) to form [PtMe(tpzm-H)(py)](2), which has a cis-PtC2N2 moiety and tpzm-H present as a bidentate (cyclometallated) ligand with one unco-ordinated pyrazole group to give square-planar co-ordination, Me(py)PtCNCNN. Complexes (1) and (2) react with two equivalents of PPh3 in hot pyridine to form [PtMe(tpzm-H)(PPh3)2](3), which has PPh3 both cis and trans to the methyl group. On heating slowly to 185 C complex (3)forms [Pt(tpzm-H){PPh2(C6H4)}](4), which has PPh3 ortho-metallated to give two cyclometallated ligands bound to Pt(II), NNCNCPtCCP, one forming a six-membered ring and one forming a four-membered ring. Crystal structures of complex (2) and an impurity crystal of
  90. [PtMe(tpzm-H)(py)(PPh3)].2py (5), obtained from a sample of (3), are reported. The latter complex has a cis-PtC2NP moiety, with PPh3 trans to the methyl group and pyridine trans to tpzm-H, which is bound via C(5) of a pyrazole ring only. Crystal data: (2), monoclinic, space group P2,/n, a = 15.67(1), b = 9.193(5), c = 12.082(8) A, beta = 90.22(5), and Z = 4; (5), triclinic, space group
  91. P1 bar, a = 14.526(9), b = 12.133(7), c = 11.560(6) A, alpha = 89.88(5), beta = 87.35(5), gamma = 87.66(5), and
  92. z = 2." name="DC.description" />
  93. <meta content="1983" name="DC.date" />
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  206.     <h1 class="ep_tm_pagetitle">Synthetic and X-Ray Structural Studies of Complexes formed by Metallation of Tri(1-pyrazolyl)methane by Dimethylplatinum(II)</h1>
  207.     <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Canty, A.J.</span> and <span class="person_name">Minchin, N.J.</span> and <span class="person_name">Patrick, J.M.</span> and <span class="person_name">White, A.H.</span> (1983) <xhtml:em>Synthetic and X-Ray Structural Studies of Complexes formed by Metallation of Tri(1-pyrazolyl)methane by Dimethylplatinum(II).</xhtml:em> Journal of the Chemical Society, Dalton Transactions, 7 . pp. 1253-1259. ISSN 1477-9226</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2818/1/Dalton1983_2C_1253.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2818/1/Dalton1983_2C_1253.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />689Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="4009" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1039/DT9830001253">http://dx.doi.org/10.1039/DT9830001253</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Dimethylplatinum(II) forms a complex [PtMe2(tpzm)](1) with tri(1-pyrazolyl)methane (tpzm), and on heating in pyridine metallation of one pyrazole ring occurs at C(5) to form [PtMe(tpzm-H)(py)](2), which has a cis-PtC2N2 moiety and tpzm-H present as a bidentate (cyclometallated) ligand with one unco-ordinated pyrazole group to give square-planar co-ordination, Me(py)PtCNCNN. Complexes (1) and (2) react with two equivalents of PPh3 in hot pyridine to form [PtMe(tpzm-H)(PPh3)2](3), which has PPh3 both cis and trans to the methyl group. On heating slowly to 185 C complex (3)forms [Pt(tpzm-H){PPh2(C6H4)}](4), which has PPh3 ortho-metallated to give two cyclometallated ligands bound to Pt(II), NNCNCPtCCP, one forming a six-membered ring and one forming a four-membered ring. Crystal structures of complex (2) and an impurity crystal of&#13;
  208. [PtMe(tpzm-H)(py)(PPh3)].2py (5), obtained from a sample of (3), are reported. The latter complex has a cis-PtC2NP moiety, with PPh3 trans to the methyl group and pyridine trans to tpzm-H, which is bound via C(5) of a pyrazole ring only. Crystal data: (2), monoclinic, space group P2,/n, a = 15.67(1), b = 9.193(5), c = 12.082(8) A, beta = 90.22(5), and Z = 4; (5), triclinic, space group&#13;
  209. P1 bar, a = 14.526(9), b = 12.133(7), c = 11.560(6) A, alpha = 89.88(5), beta = 87.35(5), gamma = 87.66(5), and&#13;
  210. z = 2.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/259901.html">250000 Chemical Sciences &gt; 259900 Other Chemical Sciences &gt; 259901 Organometallic Chemistry</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2818</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Prof Allan J Canty</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">11 Jan 2008 08:43</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">11 Jan 2008 08:43</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2818;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=2818">item control page</a></p>
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